There’s good evidence sun exposure makes you live longer but it also definitely makes me feel physiologically optimal. I have more energy, get more jacked, can lift more and feel at my best cognitively.

If sun exposure did shorten lifespan marginally I would still get as much sun as I could just to feel at my best even if statistically that meant I may die a few years earlier. Nice (and obvious) thing is the sun optimizes physiology *and* makes humans live longer.