You were the girl I wanted to be when I was a teenager. I was stared at in the locker room for exactly the opposite reason, I had next to nothing "upstairs". I'm still a 32A. But you know, we all come in different sizes and shapes.
I am guilty of the generalizations you noted, well the back pain, not the Only Fans (I just has a friend tell me to get one...I'm 51, HA, not likely).
Funny thing, I too spent a fortune on bras, when I wore them. You know the "miracle" in the miracle bra, yeah, it's a miracle any idiot pays for it or can afford it. Just saying.
We're all gorgeous exactly how we are. Thank you for your story, it did educate me.