Bart is right on this (we've talked.
). SPOILER ALERT: I'm writing most of this for myself, as it's cathartic. Skip it if you're not interested in some oversharing and maybe a revelation or two at work.
My mom is a wonderful woman, a saint in many ways (she married a stallion, a real renaissance man, and right after my brother and I were born, he came down with severe rheumatoid arthritis, and for a while, before medical advancements, did everything for him. Put his socks and shoes on, and probably a bunch other things I don't know about today. She never wavered ONCE. They are as in love today as they have ever been). A couple years ago, they both retired, and spent 24-7-365 with each other. I don't know how they did it, but it wore on my mom. She worried, and they bickered, and it wore her down. At one point she said what many her age say, "I don't want no 'home', I want to die right here in my condo, I love it here".
Some of you know my dad was severely injured; it necessitated her going to assisted living. Dad is with her now, and HE'S the one struggling to adjust. For her, the stresses and strains of maintaining a condo, cooking, etc. are gone and she's as happy as she's been in a long time. Dad is struggling (fuckin' A, I love that guy: 82 and he calls me and says "I think I need a therapist to help me deal") but he gets comfort from HER peace. I spoke to her right before Christmas about this and she was clear: she knows she's failing, but she's happy, and she likes her new place, her anxiety is down to about zero, and she's going to follow God's will (she's religious, but not Born Again or anything like that) from here on out.
My dad doesn't have Alzheimer's, but he does show signs of memory loss and some dementia, and I'm pretty sure I'm probably the one suffering the most over my Mom. That's not to be begging for sympathy; this isn't at all a pity party; I'm dealing with it okay with the help of my therapist. I'm just making the point that "frames of reference" are VERY important here. Mom and dad don't think like I do anymore and they don't have the same concerns/cares I do, so it's different.
(And if any of you bozo's haven't seen the impacts of my family on some of my thinking re: the political threads, you are not paying attention. It has been a MONUMENTAL life adjustment to recognize that my parents - my heroes, my idols, my family - don't at all see the world the same way I do anymore, and in fact, maybe not even in the same way THEY did five years ago. And I have to accept that as my reality now, like it or not.)