I completely agree with you. To be a deaf has a reason, always do. I have few comments about that but it will lead to CI-debate in this topic which I rather not.
You nail it very good. But one thing I still wonder about... some people dare to suggest that humanity needs to cease its existence right now because humans have been done nothing but destruction, wars, deaths, pollutions, etc etc.. Some people start to question about our purpose and our reason to be exist on this earth. They even dare to imply that animals and nature gets along fine without us. Yes, not all people are bad but seem that 'bad' people tend to get away with it while 'good' people can't.
You brought a good point about Humans' unique talent is the sophicated way of how we operate things. but I have to play as devil's advocate on that one, what kind of 'operate things' we are speaking of? 
