Actually both bitcoin and gold are essential things, but I don't think that they should be compared to each other because they are differ in purposes. Bitcoin are used through online, we can also acquire it online, it started in the year of 2009 while gold is in the nature, it existed since ages and used in real life.

Based on my understanding, if both things differ from its purposes it cannot be compared because there would be bias that may happen because of different purposes, usage and nature.

Both are important, they have an essential value that may help us in our daily lives.