I'm reluctant to be playing god on this front, especially in light of the fact that it seems like the insect population is not doing well, globally, and forms the base for a complex food chain.
For decades we have been performing a semi-eradication effort for mosquitoes for decades, and we have not noticed a substantial change that can be considered a result of that.
I understand hesitation to muck with nature, but I think it's sort of a privileged position to have when you live in an area where malaria and West Nile are not a serious risk. Malaria kills a lot of Africans every year (400,000+ [0]), and I'm not sure how much hesitation I'd have towards eradication if anyone in my family died from it.