Let's say (hypothetically) governments find a way to shut down Bitcoin or centralize the whole thing. Even if they succeed, Bitcoin will survive because of its open source nature. Meaning, anyone with the code can just re-launch BTC and restore its decentralized capabilities. Not even purging or banning GitHub (or similar) repositories will be able to destroy Bitcoin. And don't get me started on Quantum computing.
At this point, I'd say Bitcoin is immortal. Wouldn't you agree? If not, may I ask why?
Your input would be greatly appreciated. Thank you.

immortal.
If humanity ceases to exist then so will the internet and all the data storage devices and other media will disappear one by one slowly but surely. But aside from that, I doubt even a authoritarian world government/leader will be able to stop Bitcoin.