You can't be that badly off. You are married to start with.
I might hazard a guess that you are the bashful type and thus your demeanour gives out vibes of wanting not to be dragged into the limelight which others react to. Those who are very animated and push themselves into everything tend to be those who attract a similar reaction.
As for your posts here, as a relatively unknown member at present, you still seem to get responses. Especially given that you've only answered it 2 threads, far fewer than the number of questions asked, and so are not likely to have made youself that visible yet.
I think perhaps your expectations are high and cause disappointment.
But going back to 'real life' if one is not an extrovert type one tends to remain in the background, and we all need to accept who we are and be content with it. Not that you can't try to push yourself more and hone your social skills if you wanted to.