This is interesting because I have a handful of close friends, but I've never made a close friend intentionally. I suspect that even "naturally social" people might benefit from thinking about their social lives and relationships with more intention, especially as we/they get older and opportunities for random friendship development tend to wane, especially in highly-individualized Western society where people spend most of their time focused on themselves and their nuclear families.
It is my experience that the most "naturally social" individuals ARE operating with a lot more intention if they let you really pick their brain, or you watch them interact with disparate groups of new people in different settings.
Maybe it depends on what we mean by "naturally social".
I tend to be gregarious and outgoing in most situations, but I also am very much an introvert in that I find it tiring to keep up for a long period of time. I find that I lack the social stamina to maintain and tighten connections with new people I meet. So my natural tendency is to have a large number of loose acquaintances and a very small number of close friends.
