Hackers will always be social engineers at the first place, not magicians, and will exploit human stupidity.
Bitcoin is sensitive only on bad karma. Not on brute force! Bitcoin as idea is ideal of freedom, and if they cannot take your
freedom, they will lie about it in worst ways.
Bitcoin is limited to the stupidity of its users. The wallets themselves are extremely hard to gain access to unless they are online wallets. If you use a software or hardware wallets, it is much harder for anyone to hack into them. Some people are naive and get easily fooled by people who try and steal their money. You just need to be smart about what you do and don't allow anyone to access your money.