The idea of real estate that some investors have is not to buy a land, build a property and then start renting, but to buy a land and resell. That method of real estate can really guarantee double your money or profit that is really huge. The investors who consider buying and building on a land to rent are those concerned about long term benefit from the stable income they have been able to setup which will come monthly or annually as agreed by the tenants occupying the property. Bitcoin investment is good, and real estate is not only for the old.