Sheryl Sandberg’s new Lean In project wants husbands to start cleaning to get their wives in the mood. Can’t they just do housework because it needs doing?My husband does not do laundry because he wants to have sex. He does the laundry for the same reason I imagine most people do: because the clothes are dirty.So I find myself a bit baffled by Lean In’s latest campaign to convince men to do more at home by promising them it will make their wives more likely to sleep with them.