You may be able to slow aging, but you are still going to deal with wear and tear. Until they actually find a way to promote well regulated regrowth of tissue, that is going to be a problem. I am young for my age, having been born into a family the generally lives to be old. My parents both lived to be 90, my maternal grandfather lived to be 95, and my maternal grandmother was one of three in here family that lived to 100+. On my father's side, his mother died at 88. For someone born in 1890 that was a feat. His father committed suicide during the great depression, but two of his father's sisters lived to 98 and 101. You get the drift. Dinosaurs. But wear and tear still took their toll. My father's hearing was week, and he was losing his eyesight before he died. My grandmother was completely blind before she died. My mom succumbed to a cancer that had recurred.
Wear and tear.
I worked outdoor physical labor through high school, and I have the moles and other skin issues related to excessive sun exposure. I also have several joints that were injured then that have caused problems my whole life. I lost much of my hearing to childhood illness before I was twelve (an misdiagnosed issue that would have been malpractice in today's environment) that I followed up with too much live music, operating heavy machinery, and shooting trap.
Wear and tear.
So maybe we can extend the healthy life of our organs, but that isn't going to magically make injuries go away.
And I am not suggesting that young people should ever listen to people in their sixties, I certainly never did, but if you can avoid damaging your skin, hearing, and joints while you are young, you will live to appreciate that.