OK, I just have to ask; does losing a little over a kilo make THAT much difference? (MBP 15" 2.54kg, MBA 1.36kg)

I've traveled for years, and I really don't see losing a simple kilo making a big difference in what I carry along with me. sure, every bit helps, but to spend more and remove a bunch of features, just to dump a kilo?

And, if traveling light is that important (and more convenient), why did you get the MBP and not a regular Macbook? It's half a pound lighter...