Why are people so selfish?

why are people more selfish now then they have ever been? people dont realise how lucky they are.people seem to be more in to money now then ever. the goverment wants to go green witch is good but whats the point if amaica wont do it too? and chaina is suffering from polushen too..... so why make people pay more tax when people are at there limits and det.and why do people act as if there so far up thier own ***?