GM based agriculture incurs more costs than benefits

A report out of Germany indicates that the use of GM crops in agriculture;

"does not bring any macro-economic benefits. In fact, the use of GM crops incurs extreme high costs in the entire food chain. These costs are generated by strongly increasing seed prices as well as necessary measures to avoid threatening resistances, the separation of commodity flows, and analyses. Additionally, there are losses (Dazu kommen Schäden) to the tune of several billion US dollar, which where caused in corn and rice by contamination with unapproved GM. Also in farming, the at best marginal cost benefits of planting GM crops pay off only in the short-term. Clear winners from the use of GM seeds are a handful of corporations, first and foremost Monsanto, which secure high profits for themselves from seed patents."

read more about it at Organic Consumers Association