I react awfully to mosquito bites, and absolutely detest them and it's a big part of what keeps me from visiting home now that I prefer to spend so much time outdoors.
The simple fact is there are pros to California's perma-drought condition.
And also "it's a big part of what keeps me from visiting home now".
Surely you see how maybe some people would like to visit home, etc.
Also displayed in this thread, there are people ignorant of the possibility of simply moving somewhere no mosquitoes exist - operating under the assumption that it's unavoidable. Indeed, prior to my leaving the midwest, I had no idea there were places people could enjoy nights being active outside year-round without insect bites.
Obviously everyone is going to have different priorities, for many mosquitoes are a minor inconvenience sufficiently mitigated with bug spray and candles. I assume those people wouldn't be willing to move to escape them, but I presume they also wouldn't be vehemently raging about extincting the species as a priority.
I'm here to tell you - yes, you can move to such places, and it's not even particularly difficult or costly. There's _plenty_ of incredibly affordable desert land in California, where there are effectively no mosquitoes. If moving is too inconvenient for you, buy a recreational desert property and vacation there! It's that cheap. The fall-winter climate is ideal and remains good into the spring, there's no humidity, and of course - no mosquitoes!
Or don't make any changes in your life, and fill yourself with rage about the environment you find yourself in, as if that's going to help.