A. The electoral college has information about candidates and situations that we don't understand. Their purpose is to save us just in case we really do choose a president who is truly a threat to our countrie's well-being (Which, I think, is a choice that has NEVER been made, which is cool, but I wouldn't want to risk losing their protection.)

B. What Gnostic Yevon said. Just because there's more people in big cities and heavily industrialized places like New York and L.A., doesn't mean that the lives and resources of those people can drown out those of many other states.
Candidates would neglect the needs of everybody else if those populations weren't necessary. Our country is not so small as Scottland. It's big, and we have lots of wide open spaces that, though lacking in sheer numbers, cannot suffer neglect. I don't want a shattered nation or an obliterated agricultural economy.