why so many languages

wouldn't it be better if there was only one language like c++ or c#
then programmers could spend their time mastering that language
instead of re-learning the basics of another language every few years

I'm free because i can think free. I see things outside their domains: what creates and connects them.
 I don't blindly listen to authority. I don't consider emotions of the moment. I don't prejudice on rumors.
I work without concrete plans. There is no limits: I can choose any path. And you can too.



________________________________________________
However profound the complicated knowledge of the world, compared to enlightenment it is like one drop of water to the great ocean.