To me it's also a matter of sound and it depends mostly on the song. My "regular" backbeat is a rimshot but that might be full centered, off-center, towards the lower edge, etc. Also, a rimshot with the butt end of the stick gives me a warmer sound for certain songs or passages. And there ...

It could be worse, I recall a picture of Mike Terrana wearing a second bass drum at a recording session just for looks or mounting purposes.

I would change it, but I've used it for too long and, besides, I'm sure I'd be assumed to be someone else's relative (which I'm not ).
My name's in the signature anyway