I don’t want to see 100yrs added, chemically, to a human being’s lifespan. That’s a horrible thing to do to anyone. 80-90yr olds can barely walk now, and the ones who can walk can’t think or remember where they were walking to anyway. Until Alzheimer’s goes the way of Polio and ways of making people a hell of a lot healther UP TO the 80-90yr mark are extremely commonplace, lengthening lifespan isn’t really doing anyone any favors. I’m more of a Hemlock Society type of guy, personally, and I wouldn’t want to outlive my effectiveness, that’s for sure. Once I can’t think or reason, or become immobile, I’m done, but thanks anyway.