Why couldn't you handle it?
I think it gets really interesting when we break through the standard answers of "wow one woman is tough enough" and really consider it. What would it be like? We have some tv shows to go by, but that dramatizes it. It wouldn't be just all sex all the time, or all nagging all the time. There are times my wife and I both thought another adult in the home would be great. Potentially a third income stream. Someone else to help corral the kids. Someone maybe available for getting to that appointment we almost missed for whatever reason. Could there be a marriage that was celibate except for one partner, say the "primary" partner?
Sounds like you want a live in nanny that you don't want to bang.