Conferences – Why Do You Go (or not)?

I’m always curious as to what brings folks to different conferences. Right now, IT Pros in the US have a few basic choices: Microsoft TechEd, Microsoft Management Summit (MMS), Windows Connections, and TechMentor. Which of these – if any – do you attend, or would you attend? Why? I know some folks like to hear the “offical word” at a Microsoft show, while others prefer the “real deal” that non-Microsoft presenters can share – what makes you want to go to a particular conference? Or, if you never want to go to a conference – why for? What would conferences have to do differently in order to earn your attendance?