My husband... Well, he grew up with, um, staff. I think he learned to do laundry at the firehouse. I know that's where he learned the basics of cooking.
The rest just evolved. Not that there haven't been contentious discussions about using one's eyes to look around and actually SEE that something needs to be done, but most things have just fallen into place. We don't have traditional roles, anyway; during the first half of our marriage, I worked full time and traveled a lot, and he worked every third day, so he was just here more often. Now, I work part time, early in the morning, and he works every fourth day, so both of us are here most of the time. Nothing really gets done "magically" while one person is at work, you know?