OP you are perfectly normal
I've always considered myself a loner. I socialize a little while at work but hardly any outside of work. Have a wife, no kids. We are both very similar in the fact that we don't like to socialize a lot so we do most things just the two of us.
Same here and most people I see do the same.
Looking up and down my street almost NOBODY has friends that come over on even weekly basis or goes out much AT ALL.
Most people like the comfort of their own home and don't go out much. Not only that, it's expensive to go out!!! (especially when you have kids).
I tend to call my self "stay at home type", I simply enjoy the comfort of my own home and have a great wife/4 kids that keep me company. They also have friends and I do too, but in general people just annoy me. When we do go out we enjoy places that are not overpopulated. State parks/nature/walks and we do play plenty of sports etc. Anything peaceful and quiet. We simply HATE cities or your major tourism traps.
Just like money, more "people" more problems. Fact that I had a TON of shitty friends/people in my young life doesn't really help.
Most people that meet me think I'm an outgoing/friendly/popular person. I get along with just about anyone at work/neighbors etc just fine.
I guess you can call me a loaner, but I like it this way. It's what makes me happy!
And no I never had and will never have a facebook account.