dot --you have my sympathy.
For me being a mum was having to realise that my children had grown up in age , and that I couldn't be a Mum to them in the same way any longer.
I eventually accepted that they had their own lives to lead, and that they would make quite a few mistakes along the way.And they did!!
All that I could offer them now was a bed if they needed it and food to eat.They understood that financial help was not an option, simply because there was no money to share.
Together we went through some very rough times, and now some 5 years later all is well.They have eventually grown up , are in decently paid jobs and are beginning to settle in their relationships.
It wasn't easy for me to back off, and there were many times I questioned what I was doing.
Could I have ever called them a waste of space during the awful times--never,I love them far too much for that.!!