Usefulness of temples and similar buildings

[Nergal]

I only build Temples if I get an SGL and rush Artemis, early cultural expansion is good in my book. I built one the other day playing as the Babylonians because one city needed the extra culture due to a close border with France.and I do pop-rush Temples if I am playing a religious civ and conquesting be cause its a cheap way of stopping flipping. Other than that Temples are generally a waste of money. I normally just conquer for the luxuries to support my civ, Markets and luxuries provide way more happiness than a temple ever could and bonus commerce too.