I now have a doorbell camera (a Reolink one)!
It's fun explaining to people that my security cameras are not for security, but mostly just for playing with the technology.
And I got the doorbell one partly (mostly) because I work from home most of the time, and want to know if the person at the door is just leaving a package, expecting me to sign for a package, or are trying to sell me something, as only one of those things are worth getting up for.
I had hoped I'd be able to do things like detect if my wheelie bin is out, but the camera doesn't quite cover the right area so I'll get another to put over my driveway and point at the kerb.