What makes you so confident that Bitcoin will grow and persist in the long term?

There are external influences that can be influenced by people and weaken the system. The biggest threat, in my opinion, lies in the general financial system and its powers.

Bitcoin and blockchain, through their decentralization, take power away from organizations and institutions. Since financial powers have significant influence, a possible scenario could be that Bitcoin is no longer recognized as a form of payment. Or, as we're seeing now with BlackRock, Bitcoin may not be accepted as an asset (yet), which could lead to a decrease or absence of value appreciation.

I look forward to your assessment.