If believing in something helps people treat each other nicer or helps people lead a better life, so be it. If what you believe includes killing other that don't believe the same as you, that's when I have a problem with a religion.
Dude christianity has passages about stoning those to death who wear different fabrics and all sorts of other things, that is exactly what you are railing against. if you believe in wearing two different fabrics christians do not believe in what you believe in and want you dead. The only difference is that islam hasn't had there own enlightenment like christianity and many still preach that nonsense. God hates fags is a christian group.
I agree with the first part of what you said, all beliefs are false, so pick a nice story to tell yourself. Dead serious.