By making it a tournament, you’re teaching those new to the game how to play in a tournament in case they ever have any interest in playing in a casino, you’re donating $10.00 to one of your friends (or yourself!), and your giving people an opportunity to gamble $100,000 (in chips of course!). You can mix social circles that would ordinarily make for an awkward party, put them at a poker table together and suddenly everyone is best friends for life.
My absolute favorite party to throw is a poker party.