>> I feel profoundly disappointed in life and people, in the sense of being wronged

I suspect there is a notion of "things ought to be a certain/right way" in your view of things. I feel this defense is often used to justify to oneself why one hasn't engaged in something/the world. Said another way, it is safer to think things should work a certain way instead of risking for oneself to find out. It's never too late to find out directly.