You are a very good son. It is not easy when our parents start to get older, especially with dementia. I do my best with my father, but he lives alone and is very independent. He doesn't want much help.
I fear the day will come soon when he may need help even if he does not want it!
It is very kind to talk about taking care of our elders. I think it is sometimes more challenging than you have suggested, and it is still the right thing to do of course.
Yes, I agree, its challenging - but we have to now treat them like our kids or even more than our kids I would say.