You are right in the sense, that Some ppl don't need to be taught religion to be good ppl, but That is a tiny minority of the human race. Most ppl do need to be taught right from wrong/about religion in other to forgo their basic instincts. Till religion became more wide spread, ppl were basically eating eachother. Yeah there were wars in the name of religion, but there were wars that weren't about religion, even before religion was perpetuated. The difference being that, religion taught morality, while the other wars were just about acquisition of wealth :)