@Dicer
Why would you sleep on the couch because your wife is upset at something you said? Unless she is earning more than half of the family's income, assuming splitting all assets according to wages earned, she has no standing to dictate where you sleep.

If a man sleeps on the couch its because he chooses to do so. I would however recommend constructive feedback instead of mere criticism. How is she to improve if you don't provide feedback that is practical?