This question is becoming a commonlycommon issue in the society.
.... I think this is too much of a generalizaion. In my view, this is not a common issue in the society, but an argument only.
I feel you better pay attention to your essay structure. Introduce your topic theme to the reader and then state your opinion. That's what you need to do in the introduction.
In my opinion, the advantages obviously outweigh the disadvantages
... This needs to go to your introduction.
At first, the younger a child is, the faster he (or she) learns new stuff.
....this is grammatically incorrect;
First, a younger child is faster in learning compared to a grown up.