For a male retiring at age 65, the average life expectancy is now c20 years (and about 3 years longer for females). And life expectancy rates are only going in one direction.
That's average. Which means half of us won't get there.
I had two relatives pass away in the last few years, both of whom made it to 95. Great age and all that, but they really weren't able to do much in their final 10 years. I mean they had a nice quality of life, watching TV, tipping about the house, eating their dinner, drinking their tea, chatting with children, grand children. The State pension was fine, more than covered their expenses in those final years.
Likewise my parents are both still alive, in their 80's. But, with one thing and another, they don't travel much, they don't go out too often, they spend very little.
Your scope for an active, action packed retirement is narrow. And, as I say, for many getting past 80 is not going to happen.
So, my advice, if you have some extra cash, is use it in your 60's or early 70's, because your ability or desire to do things, will change as you age.