I was addicted for awhile... step 1 is admitting it. Two kids have basically cured me now. I don't even have time to spend money these days. This auction has me unlocking the liquor cabinet though... Oh, smells very nice.
Would be fun to replace the replica in my inventory with a real one.
I play the games I buy, too, and that goes for the rare titles. I dislike competing in auctions for sealed/shrinkwrapped titles because I will open them to play them, and these sealed titles typically command higher prices than open box versions. I like to think of my collection as a living one, not a reference or museum quality set, but I think it is useful that those exist. I'm okay with boxes that are a little dinged or a cart that may have a less than pristine label.
That said, I'm getting at the level of trying to acquire only really rare carts, and if I could afford to bid on this I would. I could swing a few hundred bucks, but thousands are out of my reach for now because, like you, I have other priorities (mortgage, student loans). I don't begrudge people spending money on collecting games (or whatever they like to collect, no matter how cheap or expensive the prices are), but I hope that it brings them some enjoyment and hasn't become something like an addiction.