Wakeup and Cog, you are working from the position of liking it. You can't convince someone to do something they don't like. You, can however, teach them ways to be more discreet about their dislike. Its not an all or nothing solution. Considering there are people out there that don't even like oral/anal/whatever. I mean, some people like bum-licking. Should everyone do it?
BTW, just as an interesting aside. Oral sex to orgasm is something mostly limited to humans. I think there are some primates that do it, but that's about it. Dogs licking themselves isn't the same thing.
Second thoughts can generally be amended with judicious action; injudicious actions can seldom be recovered with second thoughts.
--Cyteen by C.J.Cherryh