Some notes on this strategy.
I'm not saying that temples or cathedrals are bad. There are some times where temples and/or cathedrals are needed. Like GOTM 8, where there are only 3 readily available luxuries on the main continent from the starting position -- and 1 more if you invade the French or English. I did build some temples & cathedrals in large productive cities *late in the game* in anticipation of increased population and its happiness issues with sanitation technology and hospitals.
However, I would challenge the knee-jerk "build a temple everywhere" strategy. I hope my posts help the reader to consider temple and cathedral building on a more strategic level, as adjuncts to happiness in very large cities after luxury exploitation and marketplace construction is maxxed out. Save the resources and the money on superfluous temples, and use them to win the tech war instead with libraries and universities. And this strat actually gives you a cultural *advantage*, since libraries give more culture than temples and universities give more culture than cathedrals. In GOTM 8 (didn't submit it as I didn't finish in time), I had a lot of culture cities flip to me, as well as running away with technology and all the late wonders.
-WoundedKnight,