Those 7 might be good to some who has big capital like for example the house it requires a big capital when you cash it in and the return of investment is too long.  Stock market - many people had loss their capital. Savings in the bank is safe but it really don't pay interest rather bank are using your money to some extend and the question here who got rich to your savings in the bank? Probably the bank who can control the money you contribute.  Gold and silver you need to be expert to know these kind of businesses.  These businesses might be good if you succeed.  These are already here eversince.  When we talk about bitcoin and crypto currencies, these are new invention and ecosystem.  We are thankful to the founders of these digital coins, in fact it helps a lot of people around the world.  It connected to the people around the globe.  When bitcoin started its value last 2009 from zero to millions in 2017, isn't that so amazing to early adopters who enjoyed and become millioners now, good for them.