Well, maybe it's an age factor? Most of us have been using computers for a relatively long time, so we find things easy and obvious. Who knows, maybe people will laugh at us in 20 years from now because we'll all be incompitent when it comes to flying spaceships or something similar. Hardly an event to take place in only 20 years from now, but hey, I can always dream.

"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram