But “men who refuse to help around the house could increase conflict in their marriage and lower their wives’ marital satisfaction.”
“Married men who spend more time doing traditionally female household tasks—including cooking, cleaning, and shopping—report having less sex than husbands who don’t do as much, according to a new study in the February issue of the American Sociological Review.” [EurekAlert]
This could be statistically correct but it tells us nothing about driving factors. Men who embrace more “macho” roles may be more demanding of sex, or they may choose partners who want the more “macho” role and that may increase their frequency of sex. Men who are more willing to share the tasks may be less demanding or they may define themselves less by their sexual count. Women who ask that men share more tasks may also be busier and less available for any mix of reasons.
Upshot: meaningless research at this point. I would say that what matters is the relationship and how it satisfies the partners, something only they can define.