Maybe your family was really unlike mine, but I grew up surrounded by my mom's friends and she definitely never gave us any impression that having kids was a permanent impediment to socializing for her. Obviously I don't remember my early childhood years super clearly, but by the time I was in elementary school I think we had either adult friends (including many who didn't have kids) or kid friends over for dinner at least once a week, and did other social things on the weekends. My mother is a dyed-in-the-wool extrovert and social butterfly, and you are not required to follow her example. :) I'm just noting that it is entirely possible.

(It only occurs to me as I'm writing this that I thought of all those people as my mom's friends rather than as my mother and stepfather's friends. I'm sure my stepfather had friends... I'm pretty sure... huh.)