Earlier quoted context omitted.
because it's more efficient? The services will help more people because of population density. I mean, the math is obvious. I'm not sure what the argument is. Nobody is saying city folk are more important. There are simply more of them.
I've lived in cities - they typically failed to provide better services than lower density suburbs, despite having a bigger tax base and "efficiencies". There are many reasons for this, but cities do not become magically more efficient or well run with more people. Sadly, the opposite is usually true. I think you've bought a bill of goods that a certain group of people are selling, without actually having lived it.
I think this is an almost uniquely American phenomenon. In most places in the world, the suburbs are where you grudgingly live when you can't afford housing in the city.