I wouldn't sacrifice my enjoyment of my youth just to gain a couple of years when I'm 80 and can't fully appreciate it. To me, that's stupid.
i dont give a crap about my life.... i am looking forwards to dying although i dont want to die yet.
I've given up smoking, only drink on special occasions and have become a vegetarian (although that wasnt a health issue). I don't want to die a slow and painful death which was the main reason i gave up what i did (smoking mainly) and at the same time don't want alzheimers so i'll probably just do the japanese thing and top myself when i become a burden
I used to drink loads, smoke, take drugs, never exercised etc... Now I don't drink, I have stopped smoking for 8 months (Woo hoo) not taken any drugs for ages and exercise loads and eat really well, so I guess I am starting to 'maximise' my life span. I don't really understand people who say that they are wanting to 'enjoy' their life more now... Smoking, drinking etc don't make your life anymore enjoyable IMO. I've lived both kinds of life and I enjoy myself just as much now as I did then!
I want to delay the onset of decay as much as possible. Tbh I'm probably a prime candidate for calorie restriction for life extension when I get a bit older, I have the right mentality for it. Probably not a great thing but I can imagine myself doing it.
That doesn't translate to carefulness now, I cycle like a lunatic.
I honestly am not doing anything for my future self.
I eat a lot of crap, I drink, I smoke and I'm pretty lazy!
But in all honesty old age doesn't sound all that great, so a few years knocked off surely isn't all that bad?
There's no point in longevity if it's going to be blighted with pain and misery. If I make it to retirement without any problems, then win for me. Any health and good fortune past that is a blessing.
I don't actively do anything to maximise my life span. The only things of note might be that I'm a vegetarian, don't smoke, have no prevalent health problems, recently cut out junk food and started reading ingredients (partially loser, partially because I suspect I'm anaemic and can't stay awake more than 6 hours), get my 5 a day and have taken to drinking green tea and eating unsalted cashew nuts (natures vitamin!).
That said, my grandmother smoked like a chimney for most of her life and was fit as a fiddle until 81. She literally just died one day with no warning (probably due to a smoking-related clogged artery), but there was nothing wrong with her before. Awful for the family, but that's the way I want to go.