You're not understanding the problem.
By taking away the predators, you've destroyed the order of things. Prey animals grow to nuisance levels which causes humans and disease to kill them. Everything from rats to deer have now been pulled form the natural cycle and cause ever expanding problems.
The direct and indirect destruction of life by factory farms and the crop growing to feed the livestock is vastly larger than straight crop growing for human consumption. Basically its double dipping and you're conveniently ignoring that much of the crop production goes to livestock.
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Its exponentially less damaging to those things then factory farms.
I feel like you didn't read the post you quoted.
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I don't know who Maddox is and its immaterial anyway.
Is it holier than thou to say dog fighting is wrong? Yes or no? Is it holier than thou to want people to stop setting kittens on fire?