In answer to the OP's question, Do you hit your kids, i have to say IME it all depends If & how much you were hit as a kid.
My father never spared me from the rod (I'll admit I wasn't an easy kid) & I see that today, when my kid does something wrong bad or pushes me to the end of my tether I have a strong impulse to give him a potch, B'H I'm able to calm down & think straight & give my kid the appropriate punishment, but its not easy