Jesus. Basically everything about it. We use the web client at work, so might be a different set of annoyances.
deep breath I use slashes in 70% of the e-mails I write as the punctuation mark that they are - I have never and will never want it to start randomly guessing what files I want to attach to the e-mail when I type a slash.
I actually didn’t hate that if you typed something like “23rd” it would make the rd super-script - until the day it started doing it so incredibly wrong that it would super-script the ‘3’ and the ‘r’ and change the ‘d’ to a ‘th’ so it read “2^3rth”.
Several times per day it will show a folder name in bold with a number in parenthesis telling me I have new messages in that folder, but when I click on the folder it highlights nothing as new messages, so I have to just remember what the last message I actually read was. Search sucks. Rarely can I open attachments. I told a coworker just yesterday that if they want to keep something secret from me, their best bet is to put the secret in an e-mail attachment and e-mail it to me.

Wait, what about “killing 258 million americans”? What did I miss? That’s a larger portion than I’d suspected they were aiming for…

For what it’s worth, I switched 2 years ago and have yet to run into a game I wanted to play and couldn’t. There are some glaring holes, mostly around “serious e-sports” games that have overly invasive anti-cheat (or devs that specifically choose to block linux) that won’t work. Riot and Epic both seem to have a hard on for blocking linux users, as an example.

But here’s the neat part. You can make the switch and see, and it costs you nothing. If you are in the minority that it just won’t work for and have to switch back to windows, you are in the exact same spot you are in now, with nothing lost but a bit of time.

I mostly browse while at work to kill time… I don’t have access to the avatar I would use at work. Also I don’t think I see people’s avatars with the front end I use?