The advancement in technology have really altered much, the early man was a hunter and a farmer with his crude tools which had a great impact on his shape, size and lots more , today have seen these activities in another dimension due to technology and just like you siad

why would you need a Schwarzenegger-kind of muscles when you won't even put them to work?

At this rate of advancement, I will totally conclude an affirmative to your article, I just wonder where it all ends. It was a nice read, like always :)