I've wondered the same about them slowing down at 55 and going grey at 45. Why so much younger than the same things in VV? Does this mean we'd all look and act younger if we lived on a tropical island?! Seriously, with all the health options these people have, you'd think they'd age more slowly. Also, it's not as realistic as other aspects of the game, and somewhat insulting to the players who are 45/55 and over. Surely none of us would like to think this should represent what we are/will be at those ages!