There is no 'never' option because it doesn't make sense if you know one bit about history. Empires rise and fall, nothing lasts forever. Of course it could be way after 2025 that it collapses. And it will always be due to an unexpected event, not some artificial accounting construct like a debt limit (though it could set things in motion).
Look up the history of the Denarius and Antoninianus, two of the most common Roman coins.
The Denarius was issued around 269 BC and was 100% silver weighing 6.8 grams. By the 3rd century AD, had been debased to a smaller bronze strike with no silver content at all.
Most other Roman coins that were introduced with silver content were debased as well.
The devaluing of currency is definitively (though indirectly) correlated with the failure of empires.
The US dollar has been debased in value more than 95% in just 100 years. The Roman empire reigned for 500 years before reaching that level of inflation.