Yes bitcoin is really secure. no one can steal bitcoin, except for our own carelessness. 
The government can not be that easy to ban bitcoin transactions, because bitcoin is the future.
Bitcoin is not safe because its exchanges are online services that lets people buy and sell Bitcoin (and similar cryptocurrencies) using a website or mobile app. Just like other online companies, they can be hacked. The government can not be that easy to ban bitcoin transactions, because bitcoin is the future.