It's not just about happiness, but also productivity, diversity of thought, ideas and working styles, having a well-rounded team, and all that jazz. Though I'm sure happiness comes into it, too.

I'm female, and half the reason I'm tempted to apply is the scholarship. I find that a little disquieting, and I can't quite put my finger on why. Unfortunately, the scholarship is not enough for me to give up my (non-programming, but in technology) day job and move across the country, so it's something of a moot point. I'd love to do Hacker School, it's definitely a direction I'd really benefit from growing in, but the sort of person to whom the scholarship makes a substantial difference in applying... let's just say not every woman falls into that category.