History shows that Bitcoin will outlive any issue, minor or major, and it will outlive you and your family. So no, "one scenario" is not enough to destroy Bitcoin. Where are we at today? 16 years of a constant arms race
and we didn't even need to hard fork once for cryptographic reasons. 
Jul 2010 OP_RETURN Fix Patch spend-from-anyone bug Hard Fork
Aug 2010 Value Overflow Fix Fix 184B BTC bug Hard Fork
Cryptographic reason: Fix value overflow (arithmetic bug affecting BTC cap)
Sep 2010 Opcode Deactivation Disable insecure script operations Hard Fork
Mar 2013 v0.8 Fork / BerkeleyDB Limit Incompatible DB settings Hard Fork
Jul 2015 BIP66 Signature Fork Signature rules enforcement Hard Fork
Cryptographic reason: Enforce strict DER signature encoding (ECDSA)
I can give you credit for the last one maybe, the rest are nonsense and not related to the argument. There is no arms race, and there is no danger. It is a mostly a smooth and boring ride. These things take a lot of time. More time than you have.

And plenty of smaller patches for script safety, database issues, and non-crypto logic fixes.
You're so angry that you had to drag my family into your little comment. You're angry because Bitcoin is your last hope of getting rich.
That's the only reason you're here-and that's just sad.
My point stands. You and your family will be long gone and Bitcoin will still be here. Small brains can't comprehend this, that is why they panic at the slightest progress in any adversarial research.
Then what are you doing here?
To fight lies by altcoin retards such as yourself. You're welcome.
The truth is: a lot of people are going to wait and see, and they’re going to get hurt. And when it happens, it’ll be fast. No warnings, no buffer. Just damage control.
Wake me up when you take away my Bitcoin, until then just shut up with these quantum fairy tales. You as well as pretty much
everyoneanyone that brings up this topic every few months know exactly zero about quantum computers. Neither how they work, nor whether they can work,
norwhat their limitations are, which problems they can tackle and which ones they can't and so on. You've read the definition of a quantum computer, and a few fearmongering articles and now you proceed to spread FUD that is packed as pretentious and ego satisfying legitimate concern.
At some point one must wonder whether quantum computing concerns are a psyops, which successfully panics a sufficient enough amount of people to continue to divert time from very important work such as
BIP 0324. We barely got network level encryption, a problem that has
been worked on for 10 years now! It has only been enabled by
default since Bitcoin Core v27.0.