People are aging more slowly than in the past, we have better information on how to take care of ourselves. But there is wide variation when you get older. I will say though, that I still feel really good in my mid 50s, nothing hurts, I am still strong and healthy and think that would have been less usual even just 20 years ago.
Gen X will be retiring never. I’m older genX and nope. It’s true we are close to the age our parents did (well, not my parents actually, dad died in his 50s and Mom worked till mid 70s) but no, the “wealth transfer” will skip us, we will just work, barring disability, straight through. I take my PTO, work out, and try to move through life at a sustainable pace in general.