Ask

I would say your attack surface area is reduced. Last pass and bitwarden are huge targets for state sponsored cyber attacks.

Also no lock in. I use the same password db with multiple browsers simultaneously.

There is no paid tier. All features available. Storing SSH keys for example.

I use my db to store all sorts of information, not just passwords. For example, I need to manage heaps of physical keys. I stamp them with a serial like k23 and store details about the key in my db.

Keepassxc also does TOTP. Some aren't into that which is fine but I don't see any benefit in using a separate app.