I'd like MDM to be a little more liberal.
That said, if you use MDM/TC and get used to it, it's dangerous to then turn it off, unless you're on a track. The problem I've found is, that you get used to driving WITH MDM, so turning it off can be dangerous, cause if/WHEN you forget it's off, you'll easily spin your car and easily wreck. In the middle of your spin you're thinking, wthe...oh SHT, I FORGOT I TURNED IT OFF!!! AHHH!!! Not that i've ever done that, or anything...
So, I say either get used to using MDM or ALWAYS turn it off and get used to driving with NO aids.