There seems to be a race, one of spiritual enlightenment, and one of self destruction, how can we survive?

With so many beliefs out there, and with the way the world is going, how can we as humans prevent self destruction from occurring when we can't even agree on what to believe in? It's like most of us believe in God, but we believe in different God's or religions or whatever. The point is, while everyone is arguing over who is right and who is wrong, there are nuclear bombs out there, and more being built, so how can we stop ourselves from destroying ourselves? I think it is a beautiful thing to meditate and try to free ones self of the ego, and I don't necessarily believe or disbelieve in God, I am not sure, but what I do see in this life is violence and the potential destruction of our species. I also believe that if we can all let go of our ego, all should be well. So, should I go out and try to convince people to free themselves of their ego? I don't think everyone can be convinced of this belief, and even if the majority are, well what about those with the bombs?