Shootingstar, I am one of those people who doesn't like it at all when DH goes away. And you are right, it's because I am very social and we spend tons of time together, which fulfills social needs. When he goes away, I make lots of social plans and the time goes quickly. Otherwise, I don't like the emptiness and quiet of the house. I like my "home" or quiet time, because I have and had a career where I am dealing with difficult people. I feel like my home is my oasis, and pretty much why I don't want to move to the city (besides the cycling!). I like the quiet atmosphere, but I don't like being alone. When I was single I was always out with people, even though I lived alone for 3 years.
My DH traveled so much during fifteen years of our thirty year marriage; now I wouldn't like that at all. But, I was working and had growing kids during that time.
I'm the one who is always making plans, whether to ride, go out to dinner, travel, etc. DH likes to putter around the house, as he is very mechanical. But, he is pretty social, too. It's not that I don't go places alone, but, I get lonely very easily. I wonder if it's because I was an only child for 11 years; the way I dealt with that was by having tons of friends and having sleepovers/going out with friends every Friday & Saturday when I was a kid.