People see religion as a mixed bag. It does some good, but does a lot of bad, they reason, so they try to figure out how we can fake the good without getting the bad. Then we end up with some system of law or some flawed humanism that ends up doing more bad than the religions we tried to subvert. So perhaps we should instead give the real religions a sincere go - remember that faking it makes things worse - and see if we are better off.
Mokalus of Borg
PS - Obviously I have my preferred one.
PPS - And, just as obviously, most people would prefer to continue trying to fake it.