I am very single and this is never true for me. I love my work, and then I go hang out with a friend or two for dinner or dessert, explore neighborhoods, cook myself some interesting food, play some games, work on some serious side projects, talk to my housemate, scribble notes for an essay or blog post, and generally find myself not having enough time to enjoy the things I would like to do despite not investing any time in a romantic relationship. This when I'm not keeping myself busy with traveling out of town.
When I travel my life looks more interesting, but when I settle in one place for a while to focus on work (current situation) I often fail to schedule my personal life. Definitely an area I can improve.