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)
Yawn, 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.
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.