The problem is that Bitcoin itself is not natural. As I have said elsewhere (and been attacked by assclowns of all stripes and denominations, lol), Bitcoin, in this aspect, is no different than any other fiat money out there (or currency, if you please), my point being that mimicking scarcity (or any other quality) of its counterparts such as gold doesn't endow it with the resilience and robustness due to their inherent value (entrenched deep in the minds and nature of people)...
Beauty is in the eye of the beholder
Scarcity is part of what gives both gold and bitcoin value. The only reason anything has any value at all is that everyone believes it to be true. This is true of bitcoin, gold, and fiat. Confidence in the particular monetary system is what bestows value, and part of the confidence in bitcoin is the built in scarcity of a hard cap and halving block rewards along the way. If that confidence is undermined, then the value/utility of the monetary system is going to fall, and that's true of gold and fiat too.