This game is kinda lacking on the social front. It's particularly rough compared to a game like Rift, which is really designed around the idea of making grouping as painless as possible. Plus there's a serious lack of central hubs where everyone gathers. The space station might be close, but, it feels a bit tacked on. Coruscant and Dromund Kaas should be this awesome place for characters for all levels to show off and socialize, but it's really only home for a short time as you level and move on.
I think the ships actually contribute to the isolation as well.