Earlier quoted context omitted.
Are you male? I don't want to assume. But as a woman this is something that really concerns me about the guys I and my friends date. I see my father doing the same thing. Once they get into a stable relationship they seem to think that there's no need for a social life beyond their girlfriend, coworkers, and maybe one or two very close old friends... but those old friends tend to drift away. The reason it bothers me…
This is obviously a concern, but I think personality has a lot to do with it. I haven't made new 'friends' because I just don't want more of a social life. I am a pretty strong introvert; I am loud and friendly and boisterous, but spending time with people tires me out. During the week, I get up at 6am, spend time with my daughter while I get her ready for daycare. Then, I go to work, where I am talking and laughing…
I can't say what you need, I don't know you. Maybe you could ask your wife if she thinks you need more friends? If she says something like "eh? Why?" then you're probably fine. But if you get a long pause and then, "Well, it wouldn't hurt..." then maybe you should ask her more questions.