TOPIC: Why citybuilder?

Why are there so many citybuilder servers and why does it seem like everybody plays them? >.<

I like CB because it requires you to both get a decent income, deliver big quantities of different cargo, and maintain the town. It's a more complete challenge, where as CV is just about making very long lines which carries whichever cargo pays best.

Also, who doesn't like to see your town evolve from a village to a huge city?