I certainly did not inherit it from my father. Even at his old age when he first had a laptop but did not know how to hide his search history, I found out he only looked up skinny girls.
My brother has mainly been with skinny girls as well. His wife used to be a bit chubbier, lost 20kg and became really skinny. He never compqlained about that or tried to reverse it. Now after his divorce he is back with someone a bit chubbier as well, but I wouldn’t call him a FA.
I don’t think it is inherited. I think it is probably something relatively insignificant that happened in our early childhood that triggered something. My mother was skinny, but maybe something bad happened and I was comforted by a big soft teacher or carer or so that triggered something? No idea, but I think it is something along these. lines.