Gay marriage should be legal
BOP (burden of proof) is mostly on Pro because he/she needs to provide reasons gay marriage is good for society. I, Con, will only debunk and rebut, and when necessary, I will give arguments.
All rounds are arguments/rebuttals.
A gay marriage in society is not any different from a Heterosexual marriage. The only difference being that there would be either no male or no female parent. It's the same as a single parent family, but better because the child has 2 parents to take care of them. The lack of one gender does not mean the child will be raised wrong. Good parents will strive to make sure their childs needs are met. A male can't provide anything more than a female can other than the composition of their bodies and same goes for females. There has been research done that shows that children raised with homosexual parents do not have any worse of a life than with heterosexual parents.
You say 'The world's kids don't need more broken families'. But gay marriage does not affect the number of broken families. If anything it brings more families together by allowig them to receive the benefits that families get by the government. Research shows that married couples stay together longer than non-married ones. Therefor, allowing gay couples to get married would mean less breakups of families.
As for AIDS, Heterosexual couples can transfer aids as much as homosexual couples. By allowing gay marriage you encourage homosexuals to couple up instead of having multiple short relationships or no relationships at all. And when you limit the number of people you have sexual intercourse with you limit the spread of STDs.
I don't see how not allowing somebody the same rights as you is 'Coexisting'. For instance, say there are 2 groups of kids. Part of these kids like to play soccer and some of them like to play football. The teachers have allways sold the kids who play soccer icecream, but not the ones who play football. Then one day the kids who play football say they want to buy icecream too. The teacher has more icecream to sell, but the soccer kids say that if football players eat the same icecream as them it will ruin it. So the teacher decides it's better if things stay as they were to make the soccer players happy and the football players just have to deal with it because to 'Coexist' they can't upset the soccer players.
In this analogy, the soccer players are heterosexuals and the football players are homosexuals, the icecream is marriage, and the teacher is the government. You can also compare this to Civil Unions by saying that the soccer kids decided that if they called it 'Frozen Dairy Desert' instead, then it would be ok to sell it to them.
"A gay marriage in society is not any different from a Heterosexual marriage."
Eh...are you saying that there is no difference in the two sexes 'man' and 'woman'? There is obvious physical differences but, if you know what I mean, hetero marriage is one of each and a gay marriage is one of...one sex. I believe a woman thinks differently than a man, and vice versa. A man has different physical feutures too as you said.
"There has been research done that shows that children raised with homosexul parents do not have any worse of a life than with heterosexual parents."
That is not very believable; you provide no sources.
I am against single parenting too. The reason being that it is not a complete family when one person has the job of providing (food, education, shelter, etc.), and also has to fulfill the child(ren)'s personal needs emotionally.
"...gay marriage does not affect the number of broken families. If anything it brings more families together by allowig them to receive the benefits that families get by the government. Research shows that married couples stay together longer than non-married ones. Therefor, allowing gay couples to get married would mean less breakups of families."
But what is family? Many times, people say it's about the kids.  But is that right? I don't think it's moral, or good, because I don't want the parents to be broken up while they have a ton of kids: that sets a bad example and gives the children a worse childhood. I think a family is complete when the children have enough good resources. Imagine how the divorce rates will go up. 
And again, no sources for this "research."
On the topic of health/harm for gay marriage
Harm is damage to a person physically, emotionally, mentally, spiritually, financially, morally, etc. 
Here are some harms that goes for gays and the people around them:
-Homosexuals can sue people who are exercising their religious beliefs. For example, a heterosexual married couple with children who do not want to rent a room in their own family household to homosexuals could be sued for discrimination based on "sexual orientation." This can incur significant financial and emotional stress upon the family--not to mention the "prior restraint" effect of the fear of being sued which results in a family not renting out a room. (Financial problem for those around gays)
-The fact is that homosexuals do not live as long as heterosexuals due to the health risks associated with the lifestyle, and billions of dollars are spent annually in health care for them. (Financial/health problem for gays)
-Gay Marriage means having the morals of the minority forced upon the majority. This can also be said in the reverse. Either way, there is a problem. Normally, morals should not be forced on anyone though there are exceptions. We force morals on others by preventing them from stealing, raping, murdering, etc. So, it is not automatically wrong to force morals on someone. But the issue then becomes what is morally right and wrong in the first place, and altering morals in a society definitely causes stress. (Social problem)
-Gay Marriage means a redefinition of sexual morality, and with it other sexually related practices will be affected, and this can be harmful. (Social problem)
-It reduces the number of children born in society, and we need a stable population base to operate properly. Therefore, society can be harmed.
These are just some examples, besides AIDS.
So, judging by your icecream analogy, you're saying it's not fair to keep gay marriage illegal in some states? First off, I'd like to mention that only about 5% of our population are LGBT; that's not even funny.  I say it's unfair how the majority has to have gay marriage forced upon them and their lives. Also, did you know that in 2012 about 77% of the U.S. population was Christian? If even 3/4 of these Christians disagreed with gay marriage, that's a lot of unhappy citizens.
That's all folks. I look forward to the next round! Thank you for reading.
Ennagirl forfeited this round.
Ennagirl forfeited this round.