Yes, Neanderthals were rough, tough bad dudes, as were aboriginal hunters, Roman soldiers, Tutsi tribesmen and all of our great-great-grandfathers. And yes, we are all creme-filled pastries in physical comparison. But they were, as we are, a product of the epoch in which they lived. Humans adapt themselves to their surroundings, it's what we do. Times were tough back then, ergo, the people were, too. Modern existence is not nearly as physically difficult (for most of us, anyway), and as a result, neither are we. We also don't have 30-year lifespans or live in caves. Life is a series of trade-offs.