I am doing a debate rebuttal for this side of the argument, and these are our main points. The country cannot support itself. The economic loss is basically equal to 229% of 2010 gross domestic product. (Bloomberg Markets) The energy, agriculture, and manufacturing industries have suffered the most, and that is where Syria got most of their money. The Syrian conflict is also hurting the economy of Lebanon and Jordan because they cannot economically support the Syrian refugees. (Bloomberg Markets) According to Bloomberg Markets, they also already lost a lot of money because the "European Union suspended crude imports in September 2011." The U.S. also cannot stand by while 400,000 people die, and millions are forced out of the country. (New York Times) The U.S. can't let them use chemical weapons against Syria. Yes, we should go in, but there are many ways to intervene. For example, we go intervene economically, militarily, or many other ways. Also, the UN has a clause that is called the Responsibility to Protect clause. Has anyone forgotten about that?
I am not quite finished with the research for these claims, but this is basically the idea. Many people say that we do not have the money to support this kind of invasion, but I think that it is a cause worth fighting for.
It's quite simple: Al Quada is helping the Syrian people. Supposing Assad eventually falls. How many people will have lost relatives while the west did nothing? How many people will have lost a relative while militant radical muslims were fighting on their behalf.
It doesn't take a rocket scienist to see that if we do nothing (and it might even be too late by now), Syria will be the new recruitment grounds for anti-west terrorists.
America has constantly been at war for a long time, and our economy is paying for it. America can't fight one hopeless war after another. Terrorism IS going to happen. Starting hopeless wars where you cause more damage than the actual terrorists isn't going to solve the problem. Maybe if we were at peace for just a few years, we could fix our own problems.