Since we're all fessing up, I'm 63. I only occasionally get a sore arse on my Interceptor with its infamous plank for a seat.
My wife and I did divert to the nearest Decathlon when in Spain recently, after a memorably painful long motorway run, to buy gel cushion bicycle shorts. These improved things noticeably, if not totally. As a bonus, I was able to tell her that, yes, her bum did look big in it!
But for the most part, riding off motorways, with plenty of shifting in the saddle, I need petrol or -- you guessed it -- a pee, before an issue arises in the rear end.
PS @ltf: what are mid controls?