Steve Addison posted a fascinating summary of research into the effect of evangelical conversion on gender roles:
What happens to the macho value system when the husband converts to evangelical Protestantism?The answer? He swears off the traditional masculine vices like drinking and partying most of the weekend and reintegrates himself into the household. He assumes the role of husband and father he may have neglected since the early days of his marriage and participates actively in the church community.
For many men, no longer having to maintain the facade of unrelieved masculinity and bravado is a great relief; the private world of household and loved ones is preferable to the public world of men.