Guys,
Geriatric perspective on this, but guitar can still get the chicks. Just the mode has to change with the times. My apologies to any you young girls who may lurk this man's club and find it offensive...
In the 60's, if you didn't get laid after a gig there were one of two problems. Either you as a guitarist weren't loud enough or the chick didn't try hard enough to nail you backstage. Was a time when the more liberal ladies carved the rock n' roll front man like a notch in their belt. Bragging rights. Was part of the culture of the times. Mutual benefit.
Interview with Keith Richards verifying much of my passing perspective. He added that in those times there was no thought about HIV as you played the role of frontman guitarist and the young groupie played her expected role, so he escaped what could be certain death in this age.
My thought is that now, virtuoso guitar bangers are less than a dime a dozen. Don't matter how good you are and how many cruel hours a day you practice, all you got to do is open YouTube and there is some 10 year old kid that will play rings around you. Overkill is part of the problem.
Back then and maybe still the principle. As a guitar lead man, you had two main audiences and one secondary audience.
Main audience was either the chicks or other guitar players you wanted to grind into the dust. They were all that mattered. Then there were the other clueless guys in the audience dancing around. Their only value was to pay the door tab so you would walk away with something in your pocket for the effort. But you really played to impress the chicks and other guitarists.
Today, much of guitar effort is a machine gun upsmanship. Who can play faster, tap better, techno outdo competition. Guys, no wonder the fair gender is not impressed. They respond more slowly, visceral to soulful riffs. Stuff with content. Tasteful and slower with a melodic message. No wonder they don't respond any more to math tirades even if we have bested some other male in the contest.
Guitar still gets chicks if you can play smooth giving them what turns them on.
John