At the same time, even if someone you love doesn't share an interest of yours, they should be respectful about it if they really love you.

Agreed. It wouldn't be considered acceptable to belittle your partner's interest in boating or rock climbing or scrapbooking -- why do we tolerate people ragging on nerdier hobbies? A good partner is one who is amused by your proclivities, not fearful of them.