What you're describing has been known since the ancient Greeks made stories about Tithonus.
The reality is, current research mainly exists as "old age illness is expensive, can we prevent all those things going wrong by slowing down aging?" (Currently: yes, with multiple different approaches, but so far only in lab animals).
Your personal experience of aging, or your personal experience of everyone ignoring aging? Because either way I don't see how what you wrote works.
We all experience aging, we don't ignore it, we literally feel it in our bones. It's the fountain of youth that's sought, with Tithonus being the "careful what you wish for" example to show the difference, precisely because we all know his end is not what we're seeking.
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.
If you get a chance to interview a person in their late 80s, ask if they would welcome a life extension of say, 20 years.