@guerrillarain@witches.town and I hardly use the SD deck at all nowdays, but every once in a while I take it out and play with it and go "OH GOSH THIS IS SO PRETTY AND AWESOME."
soooo I guess the point is, I don't think Tarot decks need to be justified? XD after doing semi-professional readings for a while (for like $5 each lol) I think of them as tools--treat 'em right, but don't feel bad about replacing them if they don't work for/with you.