I've known two people to reach their 90s, and they were/are both happy for it. But one was very physically active, and one is wealthy enough to afford round-the-clock in-home care. I imagine for the middle class and infirm, reaching your 90s could be hell.
My maternal grandparents are in their mid to late 90s and it's indeed not glamorous.
Fortunately they've retained mobility, partly thanks to living four floors up without an elevator for 75+ years. As a side note in their block people passed away starting with those who lived closer to the ground.
Not everyone is this fortunate though, as grandpa's older sister is 100 and bedridden.
