Every day that passes where it maintains value or doesn't go to zero just makes zero that much less likely. I find 0 far less probable than I did two years ago, or a year before that.
It is indeed like the blockchain: each day that new transactions pile up on the blockchain, the safer former transactions are.
Similarly, everyday Bitcoin survives, the more resilient it becomes.
Once we cross the psychological barrier of 1000 USD per BTC, sky is literally the limit. All the auto-impossed pessimistic mental limitations and barriers will over. 5 to 6 figures per BTC will ensue in the future.