Of course, we can tell ourselves the old familiar Lies over and over again: to have a friend, be a friend. Ladies first. It'll all work out in the end. You're a good guy--someone has to appreciate that. Don't worry about it.
The truth is, we live in a fallen world. The truth is, we have two options: to behave in a civilized (Christian) manner and be kicked over and over when we're down, all in hopes of eternal life in the society of our Creator and all His saints, or become cynical, or world-wise, or cut-throat, or whatever adjective you prefer, in order to stay alive. It's really a catch-22, in the end: do we try for "certain" happiness in this life, by adapting to the way the world works, or do we aim for happiness in the next, by letting ourselves be stepped on over and over?
Oh, if only Adam had abstained from eating the fruit on the tree! That would have kept everything so much better. As it is, we're caught in limbo, many of us undecided about whether we'll aim for certain "happiness" in this life or uncertain Happiness in the next. Add to this divine intervention by malevolent and benevolent forces, and we're positively screwed.
Long live generalizations!