I hate them too. I disable them for customers because they often hit the App Switcher gesture when they get too close to the left edge. Even I do too, and I have a touchscreen 2-in-1 tablet/notebook, yet I still can't get used to it after using Windows 8 since RTM."Touchpad, which supports Windows 8.1 gestures"
This is probably the prime reason why people hate windows 8... they try to use the touchpad to control the mouse pointer, then all kinds of unwanted things happen because they inadvertently trigger gestures.
I'm surprised nobody at microsoft seems to understand how that frustrates non-tech savvy people to no end.
After I disabled all the gestures from my mother's win8 laptop, she gets along with it much better. And so do I actually..