I'd like to do that as well in theory, except for several blockers:
- I can't figure out how to migrate from other password managers to iCloud Keychain. I have over 500 logins and an additional 100 "secure notes" that I don't want to lose.
- My employer blocks most iCloud functionality (including keychain) on my work Mac
- I also have a PC and an Android secondary phone I'd still like to work.
I've used LastPass (my first password manager), BitWarden, and most recently 1Password. My 1Password subscription expires on Feb 28th and I'm seriously considering going back to Bitwarden paid tier. It is $25 cheaper and does everything I need it to more or less and has slightly more polished (IMO) browser plugins for windows/linux.
Only thing keeping me from using Bitwarden at the moment is their current lack of mobile U2F capability. You can't have your Yubikeys as your sole 2FA mechanism because they have not enabled U2F on all of their platforms, although it is allegedly in the Q1 roadmap. Also, migrating OUT of Bitwarden is a bit of a PITA as no other password managers seem to natively be able to interpret their format...meaning lots of putzing around with the CSV format if I want to migrate out.
Finally, they rely 100% on cloud for modifying your vault. If I want to make a change while offline, I can do it in 1Password, but not Bitwarden. Not a huge deal, but it is a minor annoyance if say I change my router password while the internet is down... or if I want to make a secure note while on a flight.