For the first time in over 15 years, my Steam wishlist is completely empty. I’ve bought all the games I actually want to play. I don’t know what to do now.

100% them

I hope to get there myself someday. Preferably when I’m 70.

is this what they mean by “unlimited games but no games”

Start playing alphabetically

Now you stare at them in your library, download them, then immediately delete them because there is another game you want to play in your backlog.