Most of my favorite dive buddies are women... not because they are beautiful to look at (which they all are) but because they are extremely competent divers (most are instructors) whose diving more closely mirrors my own. They seem far better at recognizing relationships: that of the dive buddy as well as the ecological ones.
Acelockco... I almost always have trouble diving with an operator once they see my c-card. It's not that it is from the late 60's, but that it is from Los Angeles County. Heck, where do they think the early PADI founders and instructors came from. I got tired of being asked to do check out dives by instructors so young I'd been diving more than twice as long as they'd been alive. Funny that the PADI instructor in Cairns who did my AOW instantly recognized my LAC c-card and said it should be in a museum!