Yes Im a parent/carer for an A.S.D. son 18, have a dyspraxic daughter 23, now pregnant with her first child, who lives with my mum 82 with severe polyarthritis, (I take them out for shopping appointments etc) My Husband is also recovering from Tonsil Cancer & removal of a Cancerous lymph gland in his neck, oh yes my stepson has dyspraxia too. I do make time for my hobbies even if only a couple of hours here and there, I'd go mad otherwise. I love using my PC, and also enjoy my astrology, which I started doing some years ago, before I ever got a PC as I found I could work on charts when I had some spare time, or even if the kids were indoors, as I could still be aware of what they were doing.
My husband & I also enjoy going out often early Saturday evenings, having a stroll & something to eat like a carvery. Now the children are older and have some independence I don't feel guilty, my son can cook a basic meal such as pizza & oven chips, or something similar, & enjoys doing that once or twice a week, but couldn't prepare a meal from scratch as assessed for d.l.a.
Try and find something you enjoy if possible, it will help you cope better in the long run, you have rights too.