Diversification is the key to success in this market where nobody can be sure of anything. It's a great risk reduction method
Diversification in this market is just one big illusion, when most coins move in the same way that bitcoin does I do not really see the point of diversification because it doesn't help that much, you are going to lose your money if you invest in a coin that disappears suddenly, and we know that can happen in this market because it has happened before, so it is way better to concentrate in just a handful of assets that you know are going to be here for a long time.
A misunderstanding when everyone thinks that most cryptocurrency price movements depend on the price of bitcoin, actually I don't agree with this. You can see the price movements in the past, when the price of bitcoin declined but many altcoins that did not decline, one of them is the Ripple, indicating that the price movement of the cryptocurrency depends on the information that comes with cryptocurrency as a whole. Deversify in an investment is important, when you save your money only on one coin then you have no other hope than to get a loss but when you choose several altcoins you have some hope of earning profit even though the price of bitcoin decreases.