Our sil was so poor after she got divorced, running the household on one wage became quite a burden, she couldn't even afford a haircut. She asked her adult sons, both working, for a household contribution, they were living at home, one of them driving two cars (one fancy car for the weekend), flying long haul business class on holiday etc while she could barely afford to live. Her son said why should I have to pay to live at home, I'm your son, you're supposed to look after me?
And I think of people in the past who left home searching for work - who sent money back to their parents knowing that things were difficult at home, dh did this when he moved to London for many years, my Dad did this, my uncle did this when he moved to USA (all British).
And I think of my nephew, the little shit, who will lives at home and continues to take off his mum, has lived at home into his 30s - sees her in poverty as she pays all the bills, she cooks his dinner, does his laundry and keeps a roof over his head and he doesn't see what she is going through - he doesn't care...he only thinks about himself. There are 3 wages in that family but she's the only one living in poverty.
I have no idea how much money the OPs mother has but imo support should go both ways. I don't need my kids to support me - but I don't judge others who do.