Galaxy
Yes it's better than nothing but actually the attitude that anyone can do it is partly why we are in this position in the first place. Caring for the elderly and those with disabilities is a skill that actually not that many people possess. I have managed care services for a long time, I would be an absolutely terrible teacher and I am sure many teachers would be terrible carers. We should have never let the situation get to this. Many of us who work in care or who receive care have been talking about this for a long time.
Don't put yourself down Galaxy in terms of helping in a school. I'm sure you could put up exciting board displays, walk round the playground chatting to the kids, pour out the drinks, mix up the paints, do photocopying, etc! All valuable stuff to relieve the class teachers.
In care homes similarly they need precisely people to muck in and do jobs not necessarily requiring skills.