Let me avoid the technical aspects to make things easy for all readers.
So someone said that America's NSA has this great computer(quantum computer) that could easily hack Bitcoin private keys. I really doubt his claim but I know for sure that certain computers like the most powerful Super Computers are within the reach of some of this Intelligence organizations.
Do you think such computers can crack any security codes put in place to make Bitcoin very secure?
It does not make sense that nowadays all the world has technologies that they can hack your bitcoin through the computer but it's wise to make a bitcoin to give us a private key so we can just transact access to our bitcoin but when you let your private key and whom you just handed it I'm sure I will definitely hack your bitcoin