I have a good friend who does this - when camping with her it was amazing how quickly she could spread her stuff out over the entire tent and campsite, not to mention how much stuff there was. I ended up deciding she's much more comfortable when she can see all her things. Of course, she can't actually see them after the floor is covered knee-high. In any case - she's very creative.
This is absolutely DH and me. Give us about 2 minutes and our hotel room is covered in stuff. Sometimes we just look around and shake our heads--how much stuff did we bring? It isn't the same motivation as Kriston's (need to see everything) though, nor is it that we are creative. For me, it is a single-minded focus on the thing I am doing
now to the exclusion of all else. If I want the jacket at the bottom of my suitcase, then everything else between me an it is an inconvenience, to be tossed aside. If my shoes are bothering me, then they need to be off my feet now and I don't care where they go. I never think about wanting to be able to find these things later.
I am just selfish; my motto is "I want what I want and I want it NOW!" Fortunately since DH is much the same way, we really have no conflict about this. The problem is that we had hoped that DS might be more organized, but instead he got a double-hit and no good role models!