slobberinbear
Ursine Skald
For me it really depends on the way the game is unfolding. If I am in early war, chances are I don't have meditation for a long time, making the odds of a monastery spam pretty slim. If I am pursuing a religious-based strategy, I will build them in many places, especially if I am going for the various religious wonders that grant bonuses for religious buildings.
In all other situations, I am using them situationally for their culture and research bonus, and build them only after I have a library in the same city.
In all other situations, I am using them situationally for their culture and research bonus, and build them only after I have a library in the same city.