For the price of 2 games (or 1 and a half if it goes on sale, and it always did before), you can game all year. I've had mine for a year now, and not bought a game for it yet (apart from GoW Ragnarok which came bundled with it, and likely BG3 next week).
The top tier is kind of a bust. I picked it up because I thought I might play those PS1/2 games but I haven't used that at all. There's plenty of PS4 and 5 games still to play, and you can emulate up to PS3 on PC quite easily if you want to play old stuff. There's scant few PS1 games anyway. It's far from comprehensive. They should have done so much better here.
Yeah my kids don't have gaming PCs (yet?) but have fun playing through a bunch of the plus stuff when they are not on Minecraft or (shudder) Roblox on their tablets.
I don't have kids but I still find the random assortment of games a value add as I got a lot of games I would have considered anyway, so this was a much cheaper way of playing those games, best is all the random local multiplayer games that I can install for when I have friends over