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Steam has now officially stopped supporting Windows 7, Windows 8, and Windows 8.1.
(www.theverge.com)
This is a most excellent place for technology news and articles.
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.
What are the features that 10 has? A different separate control panel?