I used 8.1 all the way until around 2019, when I finally relented and switched to 10 (on 11 now). Take Windows 7 and 10, and do a “greatest hits” edition, and you have 8.1. It was basically 7 with some features that went into 10 mixed in. A fine OS for daily driving.

I would have used it for longer; only upgraded because you’d run into random little issues and bugs with various programs cause no one used it.