I'm 67 and have been thinking about how long I have left of doing this.
The last few years have been very very uncomfortable at times band-wise, due to a band member who was arrogant and awkward, but who has now thankfully left. When that happened, I questioned whether to carry on or not, and after a day or two I decided to not let the situation defeat me. We auditioned a new, much younger, guitarist and we are playing with a new-found excitement and chucking lots of new material together and playing what we hope are very good shows.
Where this becomes very relevant to this topic is that our drummer is unwell and has been out of the band since July. We have a reserve drummer covering, but it seems more and more likely that our own drummer will not be returning to the band, except to maybe do a couple of occasional short 'guest spots'. That is something that we haven't been able to discuss. He's been very determined to play, but sadly his mobility and medication have interfered with everything. That is an enormous stress for me as he's my friend and we have been in the same band for ten long years, persevering and supporting each other through some rather awkward times to keep things together.
'Do it while you can' is very much my motto these days.
You don't know when it's going to be taken away from you.