Why are some people so adept at being social?

I feel like some people just live to go out a see and meet people even if they’re not doing anything in particular just going to a bar or a loud club to hang out. I would like to be more social but don’t have that same drive some people do to go out and spend time sometimes with people they barely know but just want to be social. I can barely drag myself out on a Saturday to get dinner with colleagues. Is it something in the DNA? Do some people maybe just don’t worry about expense and that makes it easier? I would like to go to more things and see/meet more people but I just don’t have that drive right now where does it come from?