I'll concur, socialism and communism simply cannot work, as humans are hard wired against it. Alphas exist and weak specimens exist and never the twain shall meet.
However, to leap from that to (paraphrasing) "therefore we need an irrational, supernatural belief/retribution system," is, I think, selling humans short.
Theocracies are also out the window (see: Taliban, Nigeria, Saudi Arabia, etc) and even christianity failed pretty miserably in the so-called Dark Ages.
So where does that leave us?
It's also a stretch to "guarantee" that every trial lawyer and ACLU lawyer is an atheist. I trust you were knowingly using hyperbole to bolster your point. Heck, John Edwards goes to church every Sunday... and don't you forget it! (And John Kerry was in Vietnam).