Approximately 800 million people on planet Earth are currently malnourished, and 2 billion additional people are expected to populate the world by 2050. Only the widespread embrace of bioengineered or genetically modified (GM) crops and animals can solve the persistent problem of hunger and lessen the impact of pest-borne diseases without doing untold damage to the environment.
The fact is this: humans have been genetically modifying plants and animals for millennia. Just because it was done more incrementally, and out in the field instead of in a laboratory, does not make it any less of a modification. The scientific method as applied to crop-rearing offers the same boons it has to all natural sciences, namely made it more rigorous and more conducive to human progress.