My Dad hasn't outgrown it either and he's in his 70's
. My parents seem to find a lot of humour in it... Probably the best way of dealing with it- we all have to do it after all.
I wonder if it is a gender thing (sorry to sound sexist.) As a woman, I feel the need to be as quiet and discreet as possible. At least in public... in private- I let rip!
I'd say- yes- it is antisocial- most people don't exactly enjoy listening to it. Still- it's more honest in a way! Like I say- we all have to do it! Lol.