Just a quick ask, I know when you turn off the traction control in an ST170 using the button it doesn't really turn it off, which kind of begs the question why is it there ?

Yesterday I drove back in the snow from work, and found the way it cut in really annoying, but it was only when I was trying to move up a slight hill from stand still, with virtually no revs at all, it really annoyed me lol. I figured it would be easier to heat the tyres and melt the ice, but it wouldn't let me lol.