Why do a lot of young females think i'm digusting for liking older woman?

I'm attracted to women that are 20-30+ years older than me. I don't look at age or like them because they are older though. I just see them as people and beautiful like anyone else. Yet when a lot of young females find that I like older women, they say things like yuck, disgusting, etc. I just don't think that's very nice as they will get old themselves.