I treat hobby purchases as
(new word) Heirvestments.
Although I am cheap and, except for rare occurrences, always look for
turnaround value in anything I buy
(in other words, were I to immediately sell something I just bought, I'd be able to realize a profit on it), but I actually have no interest in selling anything.
In essence, my motivation is to
enjoy the stuff I have while I'm still here, but have a collection that
continues to grow in value, so when I'm gone my
inheritors could have a decent payday.
*
*Yes, they will probably (with complete disinterest) liquidate everything quickly and turn it into a deceased loss for me. 