I have an addiction to all things old and fine, and I use it all, first and foremost. Same goes for my decks, though I haven't gotten my claws on anything too outrageous just yet. I rotate through my decks and take great care shuffling and handling them, and at the same time I don't think they'll fetch great sums--or I don't care?--so life goes on and so does reading tarot with any and all of my best decks.
I have amassed over the years quite a set of Victorian period Greek revival pattern china and etched crystal. It all comes out for holiday dinners. I've broken exactly one piece in 25 years, a claret glass that now sits in broken shards under a bell jar next the others. I eventually found a replacement, and those holiday dinners are so much the snazzier for using then instead of hoarding them.