In 1998 (97?) I installed Debian 2.0 for the first time, and I had been a Linux user, both at work and for personal purposes, up until 2013. I was so fed up (because I was older) with the hardware issues (external monitors, graphics, drivers) that I switched to Mac and never looked back.
Up until now. I dislike the UI, and I'm frustrated by having to wait 15 seconds every time I want to unlock the system after a break. It's starting to feel like old-time Linux all over again.
As for the UI, meh -- I suppose it's personal taste. I could take it or leave it, but I wish they'd focus on substance over form, i.e., addressing bugs and fixing functionality (e.g., Mail's search remains useless, particularly compared to something like infoclick) instead of gratuitous appearance changes that no one asks for.
But form over substance seems the norm in our industry (see e.g., Windows 11)