Okay, you win. :-)
There's still Yoko ...
I saw a Yoko art show at a free contemporary arts museum. I did not see her though.
You get a credit for Billy Preston.
No interest in seeing Sean Lennon either.
Ringo isn’t the first celebrity to make such a statement. His has been taken much more public. And sometimes such sentiments aren’t voiced until a performer is retired; not actively recording.
There have been athletes who are upset by how much their signed items sold for (example, if a guy had signed a “bat” because there were fewer signed bats than balls). If you really want to take the value of your autograph down, SIGN EVERYTHING. Johnny Cash wasn’t a valuable autograph until he died. Same way with the Ramones (3 dead in 3 consecutive years). After you’ve died, it’s of no concern and you won’t have to sign anything anymore.
And no, I’ve never sent anything to any Beatle or gotten an autograph except from Pete.