I have to agree.

Just to pile on about the operation of factory farms. They often use a substrate like sand, which picks up the manure/urine, but then is rinsed out to reuse the substrate. This manure slurry is held in ponds and often just dumped on neighboring farms with little care to whether upcoming rains wash the slurry into waterways or overburden the capacity of soils to filter ecoli and other fun stuff before it hits the neighbors' drinking water wells.

Running this through a digester really helps so much from an environmental point of view.

Otherwise it's really a shame about the life these factory farms animals live.