Here is another video that talks about why we do Agile. This one and the one called “Being Agile is our favorite thing” were the top two vote-getters (from a perhaps somewhat-biased, large audience) at the Agile 2007 conference.
It’s a bit serious, I think. Perhaps a bit overdrawn, but I do think developers have a better life with Agile.
My view is that in Agile, we are trying to make everyone’s life better: Customers, managers, team members, business guys, end-users, our own families. One would hope that after all of those people are helped, that society would generally be better.