Think of it a different way, you like city builder games, but you don't want to play one right now. You can buy 3 different city builder games for $10 during a sale. And when you do fancy a city builder, pick the one that most appeals in the moment.
By purchasing a bunch of different game cheaply, yoh have the choice of what kind of story/mechanic to play when you do want to play a new game.
You're speculating on your future desires, and you might as well get a selection when it's cheap.
A game pass subscription sort of scratches the same itch, but you don't own the games. So can't replay a few years later if you aren't presently subscribed.
It's not about being stupid with your money, it's actually a cheap way to give yourself choice in the future.
It absolutely makes sense to buy things you may (emphasis on may) never use, especially if it never "expires". Insurance is a great example.
People are buying these games knowing they're adding to their backlog and likely won't get through the whole thing, but the price is so low that the chance they'll want to play the game someday is enough.
I'm one of these (apparently rather typical) consumers and will buy almost any modern-class AAA game if it's $5.
My argument is the value quotient is so insane that the primary friction to purchase is likely more down to the UX of the storefront to complete the purchase, rather than the purchase price itself.
So in that vein, it doesn't matter if there will be another identical sale. The psychological things "in the way" to complete a purchase are virtually non-existent if you had even a minor passing interest in the title the first time you see it at that fire sale price.
I like supporting the arts. Sometimes I like the idea of a game and want the studio to keep the lights on, even if it takes me years to get around to playing it. It's about signalling what kind of games I want to see in the world.
By purchasing a bunch of different game cheaply, yoh have the choice of what kind of story/mechanic to play when you do want to play a new game.
You're speculating on your future desires, and you might as well get a selection when it's cheap.
A game pass subscription sort of scratches the same itch, but you don't own the games. So can't replay a few years later if you aren't presently subscribed.
It's not about being stupid with your money, it's actually a cheap way to give yourself choice in the future.