I have mixed feelings about this because I know I would never be going to see an Aerosmith live show, I gave up on this band a long time ago.
But there was a time when i regarded them as the most exciting band on the planet, and Permanent vacation and Pump, are still two of my favourite albums, so of course there is still a feeling of sadness there. In the bigger picture though, each time one of these legendary acts retires, we know we're getting closer to the end of the era a lot of us grew up with, and these bands have impacted rock music in a way we won't see again. they will never be replaced by anything nearly as great, so that scene we've all lived with for decades, will cease to exist.
That in itself is quite a depressing thought.