Ok, the more I read up on these the more I'm shying away from autos. I guess I don't quite understand the mechanics of locking the fronts and driving around in 2WD until you need to pop it down in 4WD. Is that possible, or would I break something really bad?

Plus, I really don't want to have to back up some 10-15 feet to get the autos to disengage, but that leads me back to my previous question of what if I just take the car out of 4WD will it roll forward without any issue?

2002 Kia Sportage 4x4, stock.
Yes, I'm boring. I'm looking to change that.