It is upto which country you are staying, because each and every country have their own law for bitcoins, in my country still bitcoin is not legal or illegal, so we dont give any information. or we say it as short term profit.
True,it depends on what country do you live in because some countries banned Bitcoin of such reason but most countries doesn't have any care at all regarding to Bitcoin in fact some countries already adopted Bitcoin by having merchants which accept btc as a payment. In my own view, Bitcoin doesn't have a harmful effect for it should be treated by others as an illegal coin.