They're all younger than us... They have a very short lifespan.
Because its a good design and it doesn't need more than 7 to work and it's strategy is to basically mass produce itself and accept that 99% of them won't live long enough to reproduce. It is evolutionary spam.
Humans on the other hand work on a different strategy.
I'm not sure a mosquito chooses anything especially the long term path of it's evolution.
Evolution is not ba
Mosquitos have thrived with 7 chromosomes, so they haven't evolved in the same direction we have.
We're not bulletproof 'cause evolution doesn't work that way. You'd have to shoot everyone in a specific, contained population once per generation for... say tens of thousands of years and let the survivors breed for that population to evolve a response to gunshot wounds.