Well, as always, this kind of thing is a huge grey area...
But really, as long as your 'obsessions' (or whatever the heck you want to call it) are not effecting your 'normal' lifestyle, whats the problem?
Personally, i think ive gone a little overboard, im diapered every night, pacifiers, bottles, sleepers, and have a few bears myself. I indulge at pretty much every opportunity possible (aside from at night!), but i dont let it interfere with my life to the extent of being a problem. Heck, my girlfriend even likes all of it LOL
Personally, i can drop all of this tonight and although i wouldnt want to, i could still do it. When it comes to a point that you really 'need' these things, maybe its time to take a step back and assess your situation.