10 years to a human's life is a long time, but when comparing bitcoin to gold or fiat, bitcoin is nothing, so OP's doubt about bitcoin's existence is understandable.
Fiat in many nations especially the underdeveloped and developing would have reduced in value over ten years, we can see many of the countries with huge inflation over short period of time like just 6 months to 2 year, how would 10 years be? Fiat is what we can not reply on.
I still prefer gold but bitcoin is something while comparing it with gold, bitcoin has limited supply of just 21 million and also easy to buy and hold than gold, yet they are both assets that increase in value over time.
In the next 10 years, bitcoin will grow in price than gold but may still be considered as a speculative asset rather as a store of value like gold.