OP should dump her goldbricking ass and keep his extra take home pay. In his scenario his wife doesn't earn a comparative wage, nor does he get any benefits from her partnership. She doesn't cook or clean. I bet a shiny dollar the kids would be in full time care.

Why on earth would he subsidize her feel-good feelings and need for social status? WTF is she bringing to the relationship?

If all she can offer is her pussy ... well, what does that say about her? Get a rental and stop over-paying.