Yeah they'll never go down. Why don't these systems support local storage as well? Is there greater security risk in syncing to a local device?
Edit: I do not mean browser localStorage
Edit: I do not mean browser localStorage
However, in the year before I left LP, they went down three times, at most for about 4 hours. Each time, I could not access my local vault, not through the browser extension, not through the Android app, and certainly not through the website; no matter what I did, it was nothing but errors, and their support was useless. It just would not work. That was enough to spook me and get me off their service.
I was complacent, thinking that no matter what, I could always see my vault, regardless of network status, until it actually hit the fan. I'm currently with 1Password, which is quite slick (their change on 2FA is what actually got me to give them a try), but I've killed network access to my devices and was able to access my vaults.
Just in case, though, I have KeePassXC as well. You never know.
Security is a battle of convenience, and we still haven't struck gold for the layman to have decent enough security hygiene.