I'm starting to think that maybe why my family enjoys it so much is because we're all constantly dealing, or putting out feelers about deals from the second the first property is purchased, and that when the game is obviously won, people just concede and the game starts up again. Also, a lot of our deals involve more than two people - like person A threatening to sell property X, that person B wants, to person C for a dollar, unless person B sells property Y to A. Or selling somebody a property that completes a monopoly for an amount of money determined purely based on that person not being able to afford to put houses in it quickly. Mortgaging properties before selling them for the same effect. Or two players trading each other into monopolies so they can either eliminate another weak player, or have a chance to compete with a player who got the first monopoly. Spending thousands on a $200 property. Making and breaking gentleman's agreements.

Really a great time. When the trading stops with us, it usually means the game is about 20 minutes from being over while the last two battle it out with dice rolling. If that period was 4 hours long, I'd hate the game too.