"I think you'll find that taking care of someone" => I know you were writing this generically. And I'm just replying to this for the sake of all of us who do actually know what it's like taking care of someone.
But yeah. Holy shit this is hard. I've been doing this too. Had to move my mom and dad to a place a block from me when my mom was going through her final few months with Alzheimers. That was so hard. So gross. And then now with this descent of my dads. You are catching me fresh from yet another aorta aneurism surgery of his last week. This is bananas. Just endless worry, driving, appointments, cleaning, pills, macgyvering the endless broken down things in his life: the tv, the remote, the blood pressure monitor.
OMG. I see you. I feel you. :) This is a rough part of life y'all.
Maybe a little consolation but still - you are doing an amazing and wonderful thing that you can be proud of for rest of your life. Extremely hard and taxing, no doubt there. Think about some nice moment from childhood when things are rough.
Respect to you and all others doing similar service.