Very interesting post !
For my wife, it's not a problem because she is also a toy collector (Pokemon), but before, with many of my ex-girlfriends, the collections was a problem...
Problem for the place that collections takes in the apartment, problem relative to the money spent in the collections, problem relative to the un-comprehension of my interest for the toys etc.
So, one day I have decided that I would not make any compromises !
So many girls have passed, and the good one was married ^^
My friends are all "Otaku" so it never was a problem with them.
For my family, I always been a little "different" than "normal" child, but with the years passed, and as an adult, they now accept that I am a collector.
About the collections at home, before I prefered display my collections everywhere in the apartment like that :
It was not a problem for my wife, but sunlight was a problem, and sometimes all the collections was a little bit oppressive in the rooms...
So when we have moved for a new house, I totally changed the way to exhibit and store my collections.
Now all is protected by anti-UV curtains, so the spaces seems to be larger, all is better protected, and our rooms are more "mature" than before.
But I don't want to "hide" my collections, they are always close to me, they just have now a better place in my adult life I think...
And if I don't want to say to a visitor that I am collector and Otaku, nobody can know (only few items are exhibited outside the curtains), but when the curtains are open and the doors closed, an other world is shown ! ^^
Really "more than meets the eye" isn't it ?