I don't like it much.
It's the first ever Mac OS that I have found irritating.
It's clear that as they are moving ever closer to integration with the phone OS, it's becoming less like a computer and more of a compromise. You have fewer options in everything.
They have moved icons around in Mail for no good reason so they are bunched up on the right hand side.
iMessage is a bit of a mess and I use it a lot.
You need a rt click and two more in imessage to delete a message instead of just pressing on an x.
If you double click on an image it opens behind and you have to close the app to get to it-once you've worked out what's happened.
If you paste a message that's too long it opens in an annoying little bubble that's about 4" wide. Too small to see easily on the computer and why? You've got a big screen why do you not only not use it, but take away the ability to use it you had before?
See, all these things are ported over from making it work like a phone.
Thumbnails now have annoying round corners which they obviously think looks cool from a design sense but is useless for actually trying to evaluate something decently without opening it.
Icons have get ever smaller and with less contrast. The dark mode isn't configurable enough and everything is pretty much the same.
I haven't had any bugs as yet that I know of. Well maybe in mail it's become virtually impossible to find new, unread messages but maybe it's just the side bar notifications are so tiny and dull I can't see them.
Everything seems to work ok but the only new thing that's really interesting is the translation function in the address bar of Safari.
So not regret exactly, but nothing which makes me feel good or go 'Wow' and just constant irritation dealing with things that were intuitive before but which seem to be a bit less useful now.