Wall-E

So, I am watching Wall-E on TV, and they have drawn all the human charachters as fat. I am wondering why: in the future, do the benefits of technology lead us to this inevitable conclusion? Since we have been sitting at desks to earn our paycheques, our health has been in rapid decline.
Is this where we are stuck? (I was going to say headed then realized we were already there...)

I need to work out more...
Ian