If you're middle-aged and picking up the guitar for the first time in the hopes of getting chix, you've got other issues that need to be addressed first. You can still learn the guitar, but hopefully your therapist can help steer you such that you're learning it for the right reasons.

If you are at least partly motivated by popularity (and who isn't)

Umm, me? I picked up the mandolin in my 50s because I wanted to learn how to play it. To date, I've not had one woman throw herself at me as a result. I'm perfectly okay with that. That brief flirting with the hammer dulcimer wasn't any better. Perhaps I'll try accordion next.