Once they did an experiment, where they asked a bunch of geeks who were not so good with ladies to go to a bar and get the number of a lady they like. The outcome was that all of them got a number except one. Guess why? Because he was the only one who didn't have the courage to talk to a lady and ask for her number. I don't think he was less worthy than his colleagues, but obviously he was left behind because he didn't do a simple thing, which is to say few words and ask for a number from a lady he liked. This is also true professionally. It is not about competence only, but also about how you connect and socialize with others. I don't think not being sociable is something not important.