I agree... I've met my fair share of people who didn't like this relationship. And sometimes it's not because they really hate it, rather they didn't like it and find other relationships more interesting. I don't mind... besides, I'm happy enough loving this couple cause they always give me this certain joy about love. ^^ Nyaa...
Anyway, if someone were to think I'm stupid for liking this coupling, I might give them a death stare... not because they hate S+S, but they're hating something that is my preference which is none of their business.
Talk to those people who hate S+S and just lay out the reasons why you like this coupling. Make sure the reasons are plausible though... saying that "It's because they're cute and adorable!" has, in my opinion, became quite stale and easy to argue back with. But ah well... whatever works with you, I guess. ^^