I'm 72 and have no desire to get an e-bike. I've wondered how much longer I'd want to ride my current bikes, but so far they seem ideal. I bought a Cervelo Caledonia a year and a half ago and pondered at the time how much longer I'd want to ride a bike like that, but it seems perfect for the riding I do now. I know father time has his eye on me, but right now I feel like I can continue my current riding regimen indefinitely. I don't feel like I'm slowing down, but that's likely because I've only been riding five years, so I don't have the experience of having been young and fast.