There was a TV show called "The Long Goodbye"about alzheimers that showed a lot of what caregivers go thru.
A neighbor's husband would take clothes off, then run down the street.He wasn't mean & would go along quietly with who ever returned him to his home. The Dr explained to his wife that no one could know why he did what he did.His mind was gone & he needed care to get him thru the last of his life. She kept him home & later on also took care of a bro with the same disease.
A friends DH is in a home,because he did get mean & she couldn't handle him.After 50 some yrs, he no longer knows her....or anyone else.
It's a sad situation for all concerned & I agree ,you need to have time off...if only for an eve or a few hrs to get away from the house.It does you good & makes you a better care giver.