I was never an AC/DC fan. I confess that among the acts that were my favorites over the years, I really dont want to see them perform as octogenarians. I saw Robin Trower in a small venue in Chicago. If you didn't look at him (think crypt keeper) it sounded just like it did way back when.
I did see a cover band in San Fran named AC/D-She. All chicks. They were pretty good. Some tough looking mamas. Definitely not Bangles hot - but not butter faces either.
Springsteen, the Stones, and many other geriatrics... just like an old high school girlfriend who I prefer to remember as a horny, nubile young girl vs. an old hag with a fat ass, frumpy hair, and wearing a housedress. The past should remain in the past.
My favorite choice in rockers who need to hang it up is David Lee Roth. He's an even bigger ass hat than he was back in the day.