Granny in the corner

This is not a TAAT - but prompted by a thread about Christmas and reminded me of the “granny in the corner” experience.
I know many of you are incredibly active and play a pivotal part on the lives of your AC and DGC so I may be guilty of generalising.
But doesn’t there come a point where we cross over from providing all sorts of support to being “granny in the corner”.
However kind, inclusive welcoming our AC are, there’s a shift.
Sometimes I feel I am being unreasonable and want it “every which way” - to be needed, to be felt capable of taking over in an emergency, of going the extra mile in being there but then I find myself thinking Hang on, I’m 75, I haven’t got the energy or fitness I had and also, I have a life of my own, friends and activities which I can’t just drop at a moments notice to babysit (except in an emergency)
On re-reading that it does indeed sound very unreasonable!
But from being central to our family life when they were babies and young, I feel myself drifting outwards to that “corner” ! Being widowed doesn’t help because I have to form a social life of my own and perhaps (?) I am getting more set in my ways. I have friends who seem to “live through” their AC and GC , good luck to them, but IMO that way sadness lies because the little ones grow into big ones and while they may love and tolerate Granny, we are not central to their lives.
Sorry to go on, and if you have been, thanks for reading!