There are a number of good articles explaining the history of musical temperaments. One of the most useful I found this week is "Owen Jorgensen on Temperament " . Read the whole pdf first and then come back to paragraphs 3 and 4.That does not try to blind you with science and numbers but gives a clear idea of what Meantone was all about . Then he shows why Bach`s music needed something a lot more adaptable for all the different keys. The reasonable choices made by players then revolved around what sounded good. Nothing to do with anything elitist or snobbish .It sounded good so they played in those tunings. Our ears are the same as they were then . The brain will always prefer simple fractions like 3/2 between frequencies because we like the way that sounds. Meantone used that as far as it went . Well Temperament is what Bach used . Equal Temperament (not invented by Bach ) is here to stay but it is possible to escape it if you want .