Like most technology, it's not the thing itself, but what we do with it. Making sterile seeds that destabilize food production for the sake of ensuring yearly profits? Booooo. Making drought-resistant crops? Yay!
I think in vivo technologies (like CRISPR) will be the biggest game changer in medicine since antibiotics. The danger is that without robust socialised medical institutions these become cures that only the rich can afford.