Nothing. Nothing at all. But that is not the answer you are looking for. You want answers like being bullied as a kid, being ostracized by your family when you came out, being fired for being gay etc. But, IMHO, those are not things that suck about being queer. Those are things that suck about people reacting to your queerness.
I’ve been queer for a long time. I had a career in the USAF; I met my spouse of 24 years, I gained a family that accepts him and me, and I worked ten years for the USN MWRS (sailors are hot); we are financially healthy and on and on and on. Tons of good things have happened to me despite or because I am queer.