Why no stepper motor bots?

The same is true on sparkfun as with other sites: Nobody is using steppers to drive the wheels of a bot or car directly.

Is there some sort of memo that went out years ago: Thou shalt not use steppers!

Aren’t they larger, more expensive and more difficult to control than a simple hobby servo/motor?

@ mhectorgato; Nope they aren’t

I’ve been searching for years for anyone who’s done a bot or RC car with steppers; but to no avail.

http://www.kickstarter.com/projects/arcbotics/sparki-the-easy-robot-for-everyone?ref=search