First, go back and look at your age stats for members of the forum. :p
Second, consider that even though housework is shared in a modern family, the stay-at-home role is still primarily held by women. Trust me. I would love it if there were more stay-at-home dads doing the homeschool thing, because I feel a bit uncomfortable hanging out with married women. I'm definitely the rare exception around here though. So when we talk about role-reversal, we're not talking about doing "women's work," we're talking about taking on the role that is still primarily filled--when it's filled at all--by women. Women are free to go out and work and earn money for the family, but for the man to stay home and take care of the kids while his wife works is still a bit of a thing.