Buying gold is extremely easy. But the problem is when it comes to selling. The process of selling your gold appears to be much more complicated.
You have to find a buyer...then you have to find a buyer that will give you a good price for it. Good luck with that.

Then you have to deal with the logistics of paying and transporting the gold, delivery, how to receive payment, etc.

You and the buyer have to meet to make the exchange, which can present security issues.
But if the buyer isn't near you then you have to deliver the gold to them.  But does the buyer pay you first? Or do you pay the buyer first?
In this case the risk of getting scammed is very high for both buyer and seller.

Probably the fastest and simplest method of selling gold in the US is to go into a pawn shop which will give you less than half of what its worth and you end up losing a lot of money.

By comparison, bitcoin is extremely quick and easy to sell through your computer or phone app.