If complex hashing algorithms are hacked, Bitcoin will be the least of our problems. Literally nothing would be secure; national security and power grids, defense networks, all banks, all global stock exchanges, air traffic control, dams, satellites...everything.
If hashing algorithms are hacked by some magical computer or alien technology, you probably won't be on your laptop peacefully having discussions with people. There will be other things on your mind, like survival.
Who created the algorithms?
Could they have been created to be purposely “hacked” by government agencies?
Anything created by man can be destroyed. (Magic or aliens mocking)