I think I belong to the exception, but outside of work, I prefer the Mail app to Outlook because of its simplicity.
I’ve tried the new Outlook but it was useless to me since it doesn’t support anything outside O365 and Google accounts. They forgot there are people that might want to use a simple IMAP/SMTP account within the client 🙄
The good news are: they enforcing this will push me to Thunderbird, I guess…