The way our bodies react to mosquito saliva motivates us to avoid being bitten. Which must have had evolutionary benefits, keeping us away from diseases.
I.e. all those people that didn’t mind them and never got itchy from mosquito bites appear to have died out. And mosquitoes really wish that wasn’t true.
Hey, you kind of figured it out by the end. The people that stay away from those areas to prevent being bitten will also avoid disease whether that was their intention or not
I was rooting for them the whole way.