A gold that is digital or you can say virtual gold. Actually it's true for many people around the world because they see bitcoins as their business or their profit maker. Many people earned a lot by investing on bitcoin and that group of people has a set of mind that it's only for making profits and that profits are big so it's a virtual gold for them but actually the main reason for creating bitcoin is to transfer money easily along with profits and without any charge like banks and other payment gateway takes.