Bitcoin is often viewed by many as the successor of Gold. One of Bitcoin's greatest benefits on top of Gold, is portability. You can virtually carry your Bitcoin with you safely when travelling, without anyone noticing. That's not the case with Gold, as you'd need to carry physical bullion with you. Other than portability, Gold and Bitcoin are very much alike.
I just want to quote this, I think bitcoin will not be the successor of gold. As the term successor means, the original will leave and then something will replace, but there's no way people will leave gold behind, some of them have vaults to store their golds, some deposited it in financial sector's custody. Some are turning golds into luxurious items. Thus, making gold to further increase its value. While bitcoin on the other hand is stored in a different medium, though it couldn't been transformed to something with physical value, we cannot compare these assets as they are completely different.