Let us know how you like it.
Did this myself on Tuesday. It was a painful switch, their Smart Switch software to migrate all my data doesn't work with iOS 14 betas (yet) so I had to setup everything from scratch. Not fun, but most "normal" users won't have this problem.
It's no secret, but Samsung is so far ahead of Apple in terms of features. It doesn't have that Apple aesthetic, but they've come a long way since I tried Android years ago and their UI is pretty slick. In-screen fingerprint scanner is something I don't think I can do without now.
120hz is noticeable, for me anyway, my wife's iPhone looks dated now when I'm scrolling through things.
Android Auto is probably my biggest gripe, CarPlay is SO much better. AA puts limits on what you can do while in motion, doesn't let you FF music (you have to use voice to fast forward, absolutely ridiculous).
Every challenge I've run into with Android, they have a workaround, it's just a painful switch at first. Example my shared calendar, had to setup a Google calendar and share this with my iOS members and sync everything through Google Cal. Apple's native Mail app is pretty good, but there are plenty of options in the Play store that make worthy replacements, just have to find the one that works for you (I went with Nine). I miss iMessage, but not as much as I thought. With WiFi calling and options like Whatsapp, it's not that big of a deal anymore.