As did I, going back from when the Internet was still in black and white and Outlook Express was “Internet Mail and News.” And I stopped using a full-fat email client when Windows 7 was still in short pants.
I see no compelling reason to use a POP3 client these days unless you’re looking forward to starting a “my hard drive died and I’ve lost a decade’s worth of emails” thread in the near future. Webmail all the way. Accessible from anywhere, no synchronisation woes or “I can’t send email when on a different connection” and most web clients are as fully featured as their local bretheren.
I’m Running Windows 10 (I think!)
Start, winver
If you’re not you should be.