bitcoin is not so strong enough in case of security and it can be hacked as it happen during the bitfinex attack. well the bitcoin is so strong that it can run without any government people and it can totally by itself for the world to keep going.
No, I think bitcoin is strong enough and enough security for us to use. The security of bitcoin is very high if we know how to use it, and no hacker can penetrate and steal our bitcoin. The important thing is your usage, it affects the outcome of this conversation. I'm sure, if you are a careful person, you will never lose any money.