Why are we learning telugu in school?

I have been thinking on this issue from long time. Till now have not found any reasonable explanation till now.

Why do we need to learn our mother tongue?

I don’t mean we should start talking in English or Hindi. But my question is why we need to have a subject to teach the language which we already know? Why are we wasting our valuable time reading things which are of no use in this world?

One of the most striking response to this question is “How can u say that this is not use full?”
But for me the answer seems simple and obvious. The question looks like “How can you say that the dust in the dustbin is useless?”. Nothing is useless if u take it in that way. But the general meaning of useless is “Something not worth keeping or learning or buying etc”.

I have asked my mother who have got double M.A in Telugu (Of course she doesn’t know any thing u expect from her M.A’s) the following questions..

  1. Why we need to learn “Sandhulu & Samasalu”?
  2. How dose that learning will help any one? even a poet?
  3. If all the essence of the Telugu teaching is to learn new words and meanings isn’t there any alternative and best way to do so?

She was not able to answer that question. I will ask this question to some teacher who is teaching Telugu.

Do you have any answer  to my questions? Can you proove that they are not useless?

If u know any teacher then ask the same question and let me know the reply.