When I see a biological women, especially in aggressive sports, get beaten by biological man, it breaks my heart. The very reason we have the separation in sports is so women can compete against their equals. Trans people throw this whole thing off.

When I was a kid the heady adults would say "you can be anything you want when you grow up except you can't be a woman". Boy howdy times have sure changed.

All athletics should have one rule regarding Trans athletes, it should be: what genital were you born with.
There should be no argument about this, look at men's records for track and field, compared to the woman's records Men average 10% better than the lady's.
So how could it be fair to allow someone who has a biological and genetic advantage at birth over all the female athletes be allowed to participate?
It gets even shadier when considering how much money athletes make for being successful. People will do anything to win and make money.

This monstrosity is not a woman

No surgery would ever make a man into a woman. A castrated man is still a man albeit bodily mutilated.

Bone density, muscle mass, skeletal structure, lung capacity, .... they all remain as they were.

I support the trans community and I believe that trans people should be acknowledged and treated like anybody else, but the inclusion of trans women in competitive female sports is interesting, because there are differences in natural biology that can't be denied or ignored in that environment. Males, more often than not, have a natural physical advantage over females (upper and lower body strength, speed, physical endurance etc), which is why male and female sports are typically segregated. A trans female athlete, regardless of her level of transition, is going to maintain much of the strength and physical endurance of a biological male. In competitive sports, that's problematic because it almost completely negates an even playing field among competitors - a cisgender woman, more often than not, isn't going to be able to fairly compete against a transgender woman who naturally has almost twice the strength and endurance. I watched an interview of a trans female athlete, a Canadian cyclist, who recieved a lot of attention for winning in a major competition in her sport, and she basically thumbed her nose at her competitors, saying that if they had a problem with her competing, they were "sore losers who needed to try harder". Not that simple. When a woman's natural biology works against her in her own sport, it's not that simple.