For me, it's for bicycle rides and creeping in really rough off road stuff. 0% is kinda of deceptive. Even on that setting, it will run off and leave a CRF250L from a dead start, but the way the torque comes on is more controllable. The other day, I was down in Center Point and found a little rock filled road that led right up to the bank of the Guadalupe. So I put it in 0% torque mode and just crept over the big, loose river roads without the back wheel going anywhere. It's great for technical terrain. For me, at least.
The hill certainly helped, but yeah I was going to go over backwards had I not shut it down quickly. Surprised the heck out of me and subsequently made me laugh all the way into town
That little bike has some serious torque in it. Having to learn how to keep it in check.