Non multa sed multure - Not quantity but quality. (Latin proverb)

Grad school is all about the Latin. My question is: If so many of our words are based on Latin roots, why isn't Latin still a commonly spoken language?

It's getting dark already. Not exactly the motivation I need to finish my Econ paper. My narrative is starting to take on the tone of Ferris Bueller's teacher.

Anyone? Anyone? ...the cost differential is therefore statistically insignificant...