My husband sporadically complains about my knitting. It's not that he doesn't like the results -- he's a hearty fan -- and it's not that he dislikes it as a hobby. No, the problem lies entirely in the needles.
They're hard to snuggle with.
Technically I'm banned from knitting in bed. And the couch has its own ground rules: I can knit with abandon all day while most of the crowd is at school, but when it's time to cuddle on the couch, I generally switch to a book (by choice, of course -- even for a knitting addict like me, snuggle time trumps knitting time. Hands down).
Have you got any dangerous hobbies?