What is the most important advantage of organic meat?

It's not for the planet. It's not leanness, nor omega 3 nor lipoïc acid nor CLA.
In our environment the most important advantage is negative.
It is the least probability that you eat a resistant bacteria to antibiotics or even that you eat antibiotics that you don't need.

http://www.cdc.gov/drugresistance/threat-report-2013/index.html

Journal Reference:

1. Joseph Nesme, Sébastien Cécillon, Tom O. Delmont, Jean-Michel Monier, Timothy M. Vogel, Pascal Simonet. Large-Scale Metagenomic-Based Study of Antibiotic Resistance in the Environment. Current Biology, 2014; DOI:10.1016/j.cub.2014.03.036

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