It's not like we have a perfect overview of how significantly reducing these mosquito populations will affect all other animals that feed on them (and the animals that feed on those, plants that depend on their excrement etc), just to name one potential unintended side effect. Or how it may allow other animals to largely expand their population due to reduced competition for habitats or food sources (mosquitos generally don't survive on blood, that's just what they need for procreation). Or conversely, certain nutrients no longer getting sufficiently removed from the water by mosquito larvae, resulting on too high concentrations of certain substances that then start killing other animals or plants.
We're talking about extinguishing one species of mosquito. There are thousands of species out there. They will simply expand their numbers and fill the ecological niche left empty by the death of Aedes Aegypti.
But for the sake of the argument, let's assume that your doomsday scenario does happen. Would you rather risk having children with microcephalia and no ecological imbalance? Or do you actually live somewhere that mosquitos do not proliferate, so you are actually just risking other people's children, not your own?
FYI, I do live in an area where it is full of mosquitos, and I would let the fucking bats go extinct if this is what it takes to protect my children.