What you need to consider in the use of bitcoin

Bitcoin often experiences theft and hacks are very high. One proof is the Bitcoin Japan Go Mt Gox that became the world's largest Bitcoin exchanges for handling 70% of the world's Bitcoin transactions, in February 2014 was forced to go bankrupt for being a victim of hacking and lost hundreds of thousands of Bitcoin.
While in Bitcoin, once your money is lost, you can only complain to blockchain and there is no authority that can help return your money.

How? would you still keep and use bitcoin?