That glass toys are easy to break.
That anal sex is a shit-filled mess.
That people into kink are all fucked up and have a checkered past, filled with abuse.
That being attracted to older men means that a younger woman has "daddy" issues.
That men who are interested in anal play are latent homosexuals.
That people choose their sexual preferences.
That women who want to be with dominant men must have no self respect.
That men who want to be with submissive women are controlling assholes who hate women.
That gender differences are a bad thing.
There are more...I'm sure I'll think of them.