I use 1Password too, and while I like the tool..as a 7 year old user, you may recall when it was not a SaaS product with a subscription fee.
I still have the one-time fee product that they used to offer, which I happily paid for. It syncs across devices using my own cloud storage keys, not the 1Password servers.
So when 1Password decided that they would retire that option for a monthly usage a few years ago, I wondered of the compelling reason to switch. There was none. And thankfully, the grandfathered product (though with no more updates), still works.