I recently did the opposite, I sold my Emerald and Blue for a decent price, which helped fund my second hand new 3DS. I don’t really care for the cartridges as long as I can play the games, and I feel no guilt for playing roms for games that are no longer being produced :).

I do like seeing large collections of other people, but I don’t have the same satisfaction from that compared to what it would cost. (I say quite hypocritically, as I have a larger than rational LEGO collection including tonnes of Bionicle sets that I will never let go for any price)