I paid for the desktop version of 1Password. When it went subscription based I was annoyed. Started hearing about bitwarden and after trying it (after trying others) I really liked it. So I moved to it cos it was free. But I just got more impressed with it on iOS, windows, and on linux I always have Firefox open so I just use that. I decided to pay for a year to support their effort.

So no particular reason other than not liking the subscription plan of 1Password.