Well, yes you would be doing that, unless everyone stops eating for example soya.

Soya's actually quite a good example because something like 80% of the mass of soya grown is only suitable for cattle feed, and we need to grow insane amounts of it for human food because it has basically no nutritional value for humans.

What are you going to do with all that? Pile it up and let it rot, emitting huge amounts of carbon dioxide and methane?