I absolutely hate it when I tell someone I like a guy, and they say “Ew, why him?” or make a disgusted face. It’s different when I like a guy and my friends say to me that he isn’t a good person or he’s into things he shouldn’t be. That’s just friends looking out for friends. But if I say I like someone and they say he’s ugly, or gross or whatever I get mad. He may not be the hottest guy in the universe but he’s special to me and I don’t want people making fun of him. The people I like may not fit to your standards of who you like but beauty is in the eye of the beholder, and attractiveness is subjective.
Note: I am a straight but this goes for all sexual orientations as well.