I don't know about you serg69, but I work to live. When they are off working all day, then come home and meet up with friends and go out, that generally means that they have an active social life. Not like the others that sit home all day playing video games, eating and watching TV, never have friends over, rarely go out, etc...
After working all week or even all day, I want to get out and relax. I'm sure no social butterfly, but again, I don't just sit home getting fat either.