I rarely play at home games because of the sheer stupidity of how people run their games. I seem to run the only cash game in town. Everyone else runs tourneys but have no idea what they're doing.

Always ask what variation and whether its cash or tourney, buyin details, whether there's a rake and whatever else you can think of. I'm not into wasting a night of bullshit poker when I could just as easily stay home and play online.