Facts matter. Science matters. Reason matters. Mitt Romney has shown an inability to respect any of the three. President Barack Obama not only respects them he relies on them. He is an overwhelming and unquestioned choice to continue as president.
We tend to think of age only in time but I don't think it has much to do with time at all there's a whole load of other things. I've met 16-year-olds who are old and 90-year-olds who are young.