Yes bitcoin is great to make investment but for you buying gold using bitcoin? Whats the point? I think you can get more with invest in bitcoin rather than change it to gold. It is just pointless, why dont invest in both of them? Gold has a stable price with it and bitcoin has a volatile price but with this volatile price of bitcoin we can get earn more of it
Yes buying gold using bitoins is not a great idea. It is better if you want to buy gold then buy it by using fiat that is the best option if you are looking to invest in gold. But buying gold using bitcoins doesn't make any sense. And both the products are good for the investment purpose.