I'm with you on basically all points. For a good time, take a look at carbapenem-resistant enterobacteriaciae [1] and totally resistant TB [2].

Regarding the antibiotics, it's not completely clear why giving them to animals makes them bigger, and it may well not have anything to do with poor living conditions. It seems to work in humans, too, and these results were discovered as early as the 1940s [citation needed].

But those are just quibbles; on the key points, I'm with you.

[1] http://www.cdc.gov/hai/organisms/cre/index.html

[2] http://www.who.int/tb/challenges/mdr/tdrfaqs/en/index.html