[QUOTE=hankhavelock;43462]This is an excellent question ...
This is really a very important question and one that needs much more focus from established academic circles
I have to agree with Hank, I wonder about this myself as I am older than the average stud here. I would like to see pics of some of these older models and see how they are holding up. Hopefully many or even all survive the mental trauma society puts them through and they live to a ripe old age.