I would argue that programmers are still a very special group with a bias towards/a culture of short term gigs. Within my circles, those around 40 are either not programming anymore or work at "unsexy" companies with perks and benefits like "9 to 5" and paid 6 week vacation time. The cool ones still maintain a geek-comptible culture under the hood but that is not expressed in free beers and scheduled crunchtimes.