My main question is this: Is it worth switching to Ubuntu Pro? Actually I see it's free for personal use on one computer.
I'd be curious to hear the experience of those of you who switched, and also the motivation of those who didn't switch.
This question is partly related to another one: I'd like to economically support Linux in general and Ubuntu in particular. Would switching to Ubuntu Pro (and paying) help in this regard? Or which other ways of supporting are out there?
(As you understood, I'm somewhat of a newbie in the Linuxverse.)
I think Ubuntu Pro is mainly for people who don't want to switch to new releases very often. I think most people would prefer new features to not having to adjust every 4 years.
Pro essentially offers 10 years of updates instead of 5. Also, you can install some kernel security patches without restarting.
The services are listed in https://ubuntu.com/pro - IMHO nothing relevant for end users there, it's mostly for enterprises where any downtime is really expensive. But for normal users, rebooting every once in a while shouldn't hurt too much IMHO.