If that idea has carried over, it's all but nonexistent now. Through the second half of the twentieth century, the man's role has extended greatly. Gender barriers in that area are pretty much gone. Men fill the 'feminine' roles of nurse, teacher, and stay-at-home parent rather naturally. The social attitude towards men in typically domestic or submissive positions has really become quite as even as that of women as doctors and office workers. I believe Time magazine had an article in an issue earlier in the year that included studies of domestic life and men's roles in relationships. The number of homemaker fathers (the kind of man you see changing the baby's diaper in the guys' restroom and handling a bottle of breast-pumped milk), with the mother as the primary 'pants-wearer,' has been increasing greatly.
I disagree. While men can fulfill these rolls, it's still not as acceptable as if a woman were to do it. There's a stereotype, especially among other guys, of guys who take on feminine rolls as being pansies, and in the case of stay-at-home dads, whipped. I mean, it's more acceptable in society, but the stereotypes persist.