Bitcoin as being more successful as a gold-like store of value than as a day-to-day currency. Gold is typically assigned some value because of some properties, which are fungibility, authenticity, scarcity, divisibility, durability and transferability. I’m not mentioning its utility for jewellery of electronics because these only account for about $10 of gold’s value.
People value Bitcoin because it supposedly reproduces all of these values, in some cases out-performing gold and in others perhaps not doing as well.
Bitcoin has similar gold-like properties (like limited supply) but it is a unique asset of its own. (its uniqueness come from its network effect and its tx history)
Gold has been a store of value for many centuries. Bitcoin is barely older than 10 years we don't really know if it will still be a thing in the next 50 years.
A gold backed government issued crypto would solve gold's mobility problem.