Diversification of your portfolio does not mean you always have profit, sometimes you need to divert your portfolio when you see bitcoin is down and you need to divert into a stable coin which is later on repurchase after the market back to the price. Invest money on which coin you believe that it will grow up the price and I stick on the bitcoin, perhaps 90% of it was on bitcoin and the rest is on different altcoins, --and that is right, don't put your egg in one basket but it does not mean, altcoins are my priority.