I was in the same boat. I really slowed down after this thing got out of hand. Back in the good ol' days I was chasing down seldom seen foreign issues (actually having to put in effort to find these cards). Then it got a little interesting in the early 2000's when the more limited numbered parallels started coming into play. Ten+ years ago if an Isiah 1/1 hit eBay I'd come close to crapping myself, now I pick them up cheap on the reg, and let others just slip by.
I've been collecting Isiah Thomas cards (and stuff) since I was like seven or eight, and I really enjoy doing it. There's a lot of childhood nostalgia for me. Back then, in the Detroit area, they didn't get any more larger-than-life than Zeke. So, although I've been jaded by state of the hobby, I didn't just want to give up a life long hobby. So, I readjusted my thinking. I realize it's just not possible to be a "completest" collector. It's just too much. Hell, Isiah had over 50 cards alone in the 2013 Upper Deck All-Time Greats brand. I collect what I can and am happy seeing another one crossed off the master list that I do my best to keep up with. Overall, I get much more excited over the rare vintage stuff. But, I see the appeal of the new stuff too. Some of these cards are frickin' mantle pieces, and I get the "in hand" thing too. To see a scan is one thing, but to have it and turn it to where it catches light a bit differently is pretty awesome.
My current biggest gripe, being a retired player collector, is the total lack of new images on the new cards. I get that my player hasn't been playing for 20 years, but, do a Google image search for the love of God! There's more than the dozen or so images they're been retreading on Isiah's cards since 2000. Is it licensing or laziness?