My point was simply that it is not desperation. If I have currency then my economy no longer classifies as desperate. A production city after it has all the necesarry stuff in the early game (barracks, granary, maybe library for the hell of it) can do 1 of two 2 things. Build wealth to increase research of commerce cities or more units. If you have multiple production cities, which you normally do/should, then you don't need them all pumping units. 1 usually suffices or sometimes none. Wealth is the next best build if no essential wonder is on the table.