Warming climate is spreading more and more diseases via insects. West nile, malaria, zika, chagas, lyme are all very much alive and kicking with no quick effective cure or management method in sight.
It's already ruined outdoor camping for example, I would not want my family members to be at risk of an infected tick bite, and the problem is getting worse every year. Lyme disease would mean a lifetime of medication and discomfort. By not using a gene drive and just arguing on the hypothetical dangers of it, we are letting more and more people suffer and inevitably use much harsher chemical methods to manage the problem.