Its just a trend, cryptocurrencies look harder to track so they use it. Simple logic
You are right the bitcoin is very hard to track and to be use but if you are not having the proper value and the profit, I am sure the future of the bitcoin will give you the proper value and the income I am very sure the bitcoin will increase in the value and this is the main reason why the bitcoin is getting famous I hope the bitcoin will give you the best value and the price as much as I can see.