What is the big deal about a corner office?

I never worked in an office, or ever wanted to. As part of my job, there is some clerical, and I really don’t see what the big deal about data entry is. Anyway, it seems you always hear about some guy who wants a promotion (something I always decline) and, as a perk, he gets a corner office. I mean, it has a desk and phone and computer and everything else that a non-corner office has, it’s just in the corner. In school, they used to punish you by putting your desk in the corner (They stopped doing that for me when they found out I got in trouble on purpose to be alone in the corner away from all the other idiots in that classroom) but it seems to be the goal of so many who do desk things for a job. Care to explain?