Like you I don’t give any fucks about what people choose to to with their bodies.
I don’t like it either that people’s choices are the subject of so much enragement. I really don’t have to understand why cars need loud exhausts, too. Those do annoy me.
I feel like a healthy perspective is whenever someone gets on your ‘why the fuck would you do that?’ detector is to ask those people why they do it, and not assume the reason and remain being annoyed.