You might find this post from Stephen MacDonald useful if you're thinking about taking the Two Week Challenge (or the One Week Challenge if you're already familiar with one and want to try the other): http://blog.jupo.org/2011/07/30/rails-quick-start-for-django...
I imagine the answer to your question probably has something to do with the fact that most developers are staring at a screen for the majority of their waking hours. If you want to dress up in your 3 piece Armarni to impress your 27" LED then good luck to you...