Eradicating Malaria: 2

I recently read about the scientists genetically re-engineering the malaria carrying mosquitoes - Anopheles. They intend to alter the immune system of the mosquito so that it destroys the malaria parasite before it can reproduce and be passed on to other humans through the blood. When they create this variant of malaria-proof mosquito, it will be released into the wild to mate with and ultimately replace the current breed of Anopheles mosquitoes. We are going down a path to replace a mosquito created by nature with one created my man? Do we really want to erase the anopheles from the eco-system without knowing what the effect will be? 

Now don't get me wrong, I am all for science and research and appreciate the advances science has made towards human longevity, whilst possibly increasing the number of chronic illnesses we now have to contend with, but, I digress. After reading all the horror stories about the effects of so called clinical trails on this continent I can't help but be a little skeptical about why, once again we can't seem to want to get rid of malaria the easy way, but have to resort to toying with genetics  (on our little 'dark' continent, non the less). Isn't it much less expensive cleaning up our environs than it is conducting all these back and forth experiments to create a mutant mosquito?  

Call me paranoid or a conspiracy theorist but if you've seen (or read) I am Legend, but could unleashing that mutant mosquito on our continent be a (unintentional) ploy to get rid of the sub saharan people?  This may just be one of the cases where our ignorance is not so blissful anymore.