Since when contributing to the world is fierce self-importance? Also keeping your integrity (your values).. how is that selfish?

I ask not to say you are an idiot, but because I know most of the people don't get what I want to communicate and I wonder if it is my fault as in bad communication skills. For me it looks like this paradigm that I have is way way different from most people and they can't relate to it and understand it..

BTW, if there was 3rd World War suddenly and you had to choose you go to defend your country and risk deaf (automatically leaving your spouse and kids a lone) or you you don't go. What would you do in this case?