I agree that bitcoin is not gambling, those who say that bitcoin is gambling are those who do not know anything, kosher bitcoin does not harm anyone. 
maybe they want to say trading bitcoin is gambling. And I think its true for small investor. The only they can do is follow whale. skills is nothing for some coinAlso, many people who don't know about bitcoins they only know that bitcoins are using for an illegal purpose and for gambling because until now bitcoins was used more for gambling purpose. But they are missing one thing that these bitcoins has given us an opportunity to earn good profits if one invest in it.