[lottin]

The best choice for farmers isn't necessarily the best choice for society as a whole.

[ravel-bar-foo]

If society values agricultural output or having income in rural areas it's a lot better to have farmers making the choices themselves than to chose whatever non-farmer/urban/plutocrat politicians would mandate.

[modo_mario]

What about the nitrogen issue in places like Belgium or the Netherlands?

[midasuni]

Not when the externalities are hidden, especially when hidden from both producer and consumer