Buddy I am not agree with this point of yours, I admit that gold, silver, land, stock and bank investment are very good and from very ancient times people are investing into these investment and earning a huge profit in this and no doubt that these investment are very profitable even but I dont think that these investment are comparable to to crypto currencies, crypto currencies are the future investment and the profit they are providing in very short span of time is tremendous and that is why they has attracted the keen interest of millions of people around the world.
Gold is preserve of wealth and store of value. After 100 years of industrial revolution, Gold has seen and survived many wars, economic crashes, 9/11 terrorist attacks, economic booms, technology revolutions and more..
Gold is hedge against inflation and protects people's wealth during wars, natural disasters [earthquakes etc..], economic crisis