This totally works on eBay. Often when I see something used that I'd like, I'll put it in my cart and let it sit. If the vendor offers a discount then I'll consider, if not then I guess I don't actually need it.

They used to do it more often. Now not so much. I think they realized people have caught onto this and stopped offering discounts

Yup, me too.

Several reasons:

• They came with a bundle
• I bought them while I was still dual booting, and by the time Proton was released I didn't cared for them anymore.
• I bought them to play with friends/partner and never got the chance
• I played them (even for lots of hours) but haven't finish them and some other new shiny game took it's place
• Game is essentially infinite
• I bought it on sale while playing another thing, but when I finished the other game I was playing I went to play something else
• I feel like playing a certain style of game so I buy a few on sale, but after playing a couple I want to play something different

This is a black and white view on backlogs. Yes you can just not buy a game when you're not ready to play it. That's not usually how it always plays out. Yes I do buy games while they're on sale and have been out for 5+ years. I buy games with the intention to play them. That doesn't mean right away as soon as I buy it.

Most games I buy I fire up at least once. For the rare handful of games that I bought and never tried it's not a big deal because I only paid a few bucks for these games. If it doesn't click right away but I want to keep trying it goes on the back burner. If it doesn't click at all, I refund it. If it's a game I started and liked but fell off of for something else it goes in the backlog. Sometimes I just want a game in my collection. I know I won't play it right now but if I have the means to buy it, I'm gonna get it so it's in my collection and I don't have to worry about it later. That's a more rare situation and most games like that will sit in my Wishlist for years, but it does happen.

Sometimes games do go away. Command & Conquer wasn't on Steam for years and then all of a sudden the whole collection showed up. Same as Dino Crisis in the last couple days. I used to have physical copies of the games but they got lost to time, be it giving them away to friends who wanted to play them, or losing them in moves, or selling them. Some of my backlog is older generation games that have been freed from their console shackles. They just announced MGS4 for PS5 and PC. I last played that game almost 15 years ago on PS3. I would love to play it again in the future. Even if I wait for a sale, I know I want it in my collection.

Games don't always get cheaper as they get older either. Most Japanese games stay above $35 these days when not on sale. Even classics that are multiple generations old at this point. If I think a game is worth it at full price, I will pay full price.

Lastly my Wishlist isn't just a catch all for games I want to play in the future. If that was the case there would be thousands of games on it. It's a little bit more curated than that. It's mainly for smaller games I do wait for because they're in early access. Most big AAA games on my Wishlist are waiting for sales. The majority isn't released or I'm waiting for reviews to see the quality on. Yes there are games I'm interested in but are not 100% sure I would play. That's why I cull the list every few months or so.