"Religion" has not done these things. People purporting religion have done those things. See, "religion" itself is an abstract concept; it's literal applications are what you seek to attack, and since any literal application of an abstract concept requires interpretation and is therefore imperfect, the concept itself, in this case "religion," cannot be handed full blame - the majority of the blame rests on those who interpret it in a negative manner.
Minus the insulting language, that is, in essence, what religion is. What you're attacking is what it has been used for, which has, in many instances, little to do with the religion itself and everything to do with the people purporting to know what it's all about.
You may as well be describing "society" in general. Basic group theory: people come together for mutual benefits. People form a "society" in order to interact with each other easier. Said society is based on certain norms and values which determine the worth of behavior. As society grows and diversifies, norms and values change for some and remain the same for others - and conflict ensues as people increasingly cannot find compromises for differences in their views on how to get along.
All societies persecute people for "thinking the wrong way." It is not (solely) a religious problem.
Now for your next problem: what is the universal definition for existence?
If you're going ask billions of people to throw away their belief systems overnight, you'd better have some pretty intricate plans for what's going to take their places - respecting the diverse social customs which are unreligious and would therefore remain in the wake of the removal of religion.
No one in their right mind would want to manage that anarchy. Would you?
