Game Pass is amazing. I majorly upgraded to a new computer a few months ago, and in five months for games I have:
hit up my backlog
bought four new games
subscribed to Game Pass
and that's it. Yes, even the Play Anywhere games on Game Pass are enough for me, Sea of Thieves, Forza Horizon 4, and State of Decay 2 are all games I still think about buying (but instead I keep deciding to just stick with the subscription), while some of the other games like Snake Pass, Super Lucky's Tale, the Disney games, and Zoo Tycoon are games I've had fun playing a little of here and there with my girlfriend. If I had an actual Xbox, I can't even imagine needing anything but Game Pass.
Although to be fair, I still haven't paid anything for it, because I just keep redeeming free months from Microsoft Rewards, which I'm sure Microsoft doesn't mind but it does mean that I'm not technically paying for the subscription, I guess
Basically I just can't wait until they actually have Game Pass for PC, instead of this gray area that just a few games currently exist in