I think Pathfindar's said it very well. I find keeping my PaD going a constant struggle because I work long hours during the week and at weekends my wife, who's been looking after three small kids all week without much help from me (which is a lot harder than any work I do, and much less appreciated than it should be by the world at large), expects me to be around and be part of the family, not off taking photos or glued to the PC. So we fight about it and of course she usually wins

.
I often only manage to get two hours or less shooting time a week, which is less than I'd like in an ideal world, but the point is that the reasons she objects to me wandering off on my own for large chunks of the weekend are, to my mind, completely reasonable - she wants to spend time with me and me to spend time with our kids (as I do, of course!). Hobbies, particularly if you're passionate about them, can get in the way of the really important things in life if you let them - and we all tend to take the really important things (and people) for granted until they're not there.
Having said that, I can imagine if I was off shooting beautiful models things would get pretty frosty pretty quick......