Religion is the cause of many war and some people are too focused on their religion, That they refuse to accept science and many things science has proven. Evolution and being gay are the most important ones. If their was no religion, Science would have been further and there would be less war.
The act of prohibiting an act because your 'holy book' talks against it is just ridiculous. Without religion we wouldn't have people who prefer to die over getting a blood transfusion because their "god" says its a sin. We wouldn't have so many people killed because of their beliefs, Which a lot of religions do, Islam and christianity included.
We wouldn't be teaching idiotic anti-scientific garbage in schools.
And there's way more reasons.
The word of dog is fake he neder have soooon it jost exccuse to sell cross buuk ifu thik tru u bean brian watched by the dooooooode that rape the kins he jost ussse d mundy to boi manchan if u beveve e in d jebas an dog u fel in tap
As an atheist, I believe that religion is critical to the sane development of a society.
First, Lets ask ourselves what is the purpose of humans existing?
Well, From the point of view of an atheist, The universe is meaningless so is our existence. The human instinct of finding the cause/origins of things pushes us towards giving a meaning to our existence. Why are we here? What is human's purpose? Do we play a role in anything at all? There are no definitive answers to these questions as there is not a single argument suggesting that humans have in any way, Shape or form a purpose in our universe. Some might say that human's purpose is noble. We are tasked to find the hows and whys of the universe (science), Procreate and transmit this knowledge to our descendent. However, What are our descendent supposed to do with these knowledge? Prolongate our existence?
Things that are bound to happen, Will happen. If we were given a billion dice and told to roll 6 with all of them, No matter how improbable the chances are, With an infinite amount of tries, Success is bound to happen just like how human knowledge is bound to disappear with human race.
In such a meaningless environment, Humans have the instinct to find a cause, To find a purpose in everything. Religion answers these questions for us, Questions that science cannot answer, Filling our sense of meaningless in the universe and randomness and giving religious people a framework on how to produce knowledge and answer questions that science will probably never, Ever be able to answer. This framework allows us, Humans, To keep going in our lives without thinking its meaningless and develop as a society despite of our lives having no purpose at all.
I can understand the question being suggested, But there is no way it slows us down. Having the belief in a higher creator, A higher power has enabled people to do so much. For starters, The renaissance was helped by the crusades. Without the Renaissance and it's wealth of knowledge, The human race would have been lagging behind where we currently are now. Without religion, There would have been less of an incentive to coming and settling in the Colonies. That's not to say it would have never happened, But there would be fewer incentives. Not to mention, Religion is a very binding force, And at the beginning of current countries, Binding impacts such as this created the factions needed to bond people. Looking at only these few points, It is safe to assume that religion has not slowed us down.