bitcoin doesn't need to be legalized in India or any other country because what attract more people to come everyday is freedom of selling \buying using bitcoin without any regulation and limited rules .
Yes. bitcoin is a life change program and so many peoples are going to millionaires from bitcoin and now come to the point yes you are right bitcoin doesn't need to be legalized india or any or others country. but if any country govt legalized bitcoin that time people fill secure to holding bitcoin and use bitcoin.
As you know so many country peoples face money Laundering crime and you know bitcoin use it is also Money Laundering Crime.
Thank you.