I guess everyone territory is different, but I never lock my gas cap. In fact my keys are in a leather pouch inside my jacket left pocket, it will be to much time consuming doing it every time.
My f150 does not even have a gas cap.... just a flip door that does not have a lock.
And while I can leave all my electronics in the bike in NC and never will do that in Miami, I'm not worried about anyone stealing my $10 worth of gasoline in the bike. Am I missing something?