Part of living a life anywhere is getting an education. Well, here is the story of some college students who earned their degree within the virtual world of Second Life. This includes the graduation ceremony, and even the graduation party!!! Many colleges have already tried holding classes in virtual worlds, and sometime in the future, I'm sure it's going to be a lot more prevalent than it is today.
Education is the easiest application to use when convincing someone of the virtues of a virtual life, I suspect. A lot of people approve of using technology in the classroom. Well, this is using the classroom in the technology, but the principle is the same: New educational methods are being used, and being used effectively.
A big thanks to Bernard Broono for pointing me to this link.