Because not everyone who is into thick women, is into that niche fetish you have. It's a major turn off for a lot of people.
I'm not trying to be close minded, but trying to justify that your fetish isn't weird is coping. Everybody here has a weird kink, nobody's judjing, I just find it strange when people try to make their kinks sound less weird. I don't judje you for whatever fetish you have, but you gotta admit that your fetish is weird as I admit that mine is too.