There's sad stories involved in almost all sports, because that's the very nature of it: It's a competition
It's about the strong, not the weak. We celebrate winners, not losers (although of course in the big picture, we embrace sportsmanship, and the ideals of participating, fair play, and so on. So we do see attention given to those who don't always win as well). This is what elite sports is about: Winning
. You can and should of course have fun while doing so, but don't think for a second that great athletes like Usain Bolt, McKayla Maroney, Catalina Ponor, Behdad Salimi, Andreas Thorkildsen and more goes to the games being fine with getting the 49th spot in the rank or some such position. They are there to win, to get a medal. If they don't, they are terribly disappointed.
Honestly though, you cannot have watched much gymnastics if you think that the competitors aren't enjoying what they're doing. They have to enjoy their sport, even if it's hardcore, because if they hate it, they can never perform to their utmost best. And when they are doing their events, there's tons of emotions, fun, joy, nervousness, pride, and so on for them.
Sexual abuse? Well, we can just turn to American Football for the latest of that. So now what?
As for the rest of your post: Pure nonsense. So we are to assume by your comment now that all medal winners in gymnastics all have a pretty bad relationship with their parents? The world is not black and white, there are many nuances. There are many different stories. When you try to paint it like you have as above, with one color, into one singular assumed reality alone, you are doing so many competitors (and parents, coaches, teams, etc.) a grave injustice. Because it's nowhere like that.
Congrats Fruitzilla, you just won a gold medal in the Picard Facepalm event.