There are too many humans in the world, the only way to feed us all is to cut down the trees, use chemicals and mistreat animals.
We can't change it all, we can just do our little bit as best we can.
Personally I think the worst sin is waste.
If I can't eat it or give it away I compost it. Not much help in the scheme of things but it is the best I can do.
No point in complaining about antibiotics, pesticides, fungicides or herbicides. The alternative is culling the species and we ain't going down that road of selection are we?