There are certain religions that have better arguments than others. Christianity, by far, has the strongest arguments in defense of religion. And once again, you can't say something doesn't exist if you can't prove it in the same way that I can't say I can prove God exists, but I believe that he does exist. There's a major difference there.
And without God, everything is permitted. I don't know how you think in a world without religion people will become more civilized and compassionate. Look at all the wars done in the name of communism. The most barbaric statist atheistic communist dictators sought to wipe out religion, and that idea has killed more people in the 20th century than all of the religious wars combined. Think about that.