In simple terms until it gets a centralized state it will not be given importance as a legal currency. In my thinking it will get the legal status with some sort of limitations depending upon the government. It is legit, as everything happens through internet scamming is easier and this makes people term it as not a legit one.
Of course and becoming a legit currency means Bitcoin will definitely have to go through some sort of regulations and limitations because the people who makes such regulations main idea is to control Bitcoin as much as possible so if that happens there will be no difference between Bitcoin and other fiat currencies in the world unless fiat currencies are considered as paper currencies and Bitcoin is in digital form