I dont usually frequent clubs, and I have never stopped to ask what people are on.
Im not a trained fighter, Im just a guy who fights in bars and alleys from time to time.
I dont kick because I cant deliver more damage with a kick than if I just threw a haymaker. Many guys can, many of these guys are my size or larger, Im not one of them.
A knockout punch, for me, is easier to recover from if I miss, and is certainly easier and quicker to aim. I have no reason to kick because if I can hit someone in the face or head with a wound up, full shoulder and waist rotation hit...
Hes not getting up.
For women I would assume the lower body is going to be much more developed, and hence kicks are much more useful.
I often find myself with no room to punch, much less kick, just my experience in the matter.