Being part of a Religion has social benefits, so don't be surprised if a lot of those non-Atheists don't trully believe it but participate in it because it's good for them or because of social pressure.

Certainly, and speaking in terms of Christians which is the ones I'm more familiar with, considering the number of people who actual strictly even just try to follow ALL the teachings of Jesus or even all of the 10 commandments, almost all "Religious" people pick and chose which parts they believe and which they don't.

(In modern society Greed and Envy by themselves are probably regularly broken by 99% of Christians).