Happiness maximization is such a stupid two-pence-guru idea...
... that anyone who consider it should be happy-slapped with a bat at least twice per hour for at least five months. With a
jawbreaker water-soaked pillow.
Seriously, it's something out Brave New World, I can see Ford cynically talk about great happiness for the higher castes while we bomb colored people in foreign lands that might interfere with our right to allocate the oil under their feet, because, you know, happy people are not wont to question the leadership or their edicts very much. Then everyone takes a tablet of Soma, has a mindless sex orgy with whomever is at hand (no AIDS please, we are happy), then goes home contented. THE END!!
Yeah, how is happiness maximization going to bring the capital infrastructure that brings you through the winter, saves you from (fear!) EBOLA or gives you adequate medical care? It won't. Be happy, die crappy.
Moreover, the idea that the government is in charge of maximizing anything, be it happiness or GDP (which it currently tries to nuke hard), is right up the alley of that intellectual shitter Krugman, who isn't exactly against have a war to "up the GDP" (and of course destroy everything of worth except the number). That he now whores out with happiness is a new low.