More likely it's a non-tech-person thing. Leaving everything open and clicking around in expose until you find stuff is easy: closing programs and then trying to find where you saved stuff via a file manager is hard.
That's because "tech people" have been conditioned, through the years, by the limitations of the hardware (limited memory) and operating system. It's the OS's job to manage resources, but we still do it anyway. Which is why Apple's upcoming Lion OS with auto-save, auto-resume, window management etc will be a god-send for many people I know.