I don't reallly know what makes a person choose a religion over the others, but I know that religion is a somewhat more reliable way to enforce acceptable behaviour than judicial law. They both cover roughly the same crimes.
For usual law enforcement, you're only punished if someone can prove your guilt AND if they can catch you. There's always a theoretical way out.
For religion, "God" is
always watching your every step, and "in the end" you'll have your "judgement".
And if you behave you'll have your special second life, where: everyone feels happiness although nobody will ever be sad... everyone's always a winner, but nobody will ever lose anyway.. everyone is rich but then nobody's poor... everything is right and nothing is wrong (does this mean "ANYTHING GOES"?)...etc...
Note that creating new omnipotent entities is not a crime unless someone
proves admits they are not real.
Anyway, more lulz here >>
http://www.youtube.com/watch?v=JKGtcVoBhBQ
And more interesting stuff (the host isn't really the smartest guy around, but anyway...)
http://www.youtube.com/watch?v=kSjyTyFJe5g
http://www.youtube.com/watch?v=b5ArWUyayv4