Would you rather go to a friend's house or have them over?
Oh wow, tough question. :-)
Well, while it's tempting to enjoy not having to cook all the food or mop the house... I prefer to have them over. I'll give you two quick reasons.
For one, we've noticed that, most of the time, our guests will stay later than we would at their house. ;-) Yes, it's sneaky, but it's true.
Also, I get a lot of comfort out of being on home turf. There's always something to do with my hands if I'm a loose ends.
And besides, it's easy to change clothes when you're sweaty from a soccer game.