I think to invest, don't ever leave bitcoin, as a top choice, and some of your funds can be invested in several other coins, I think the best is the top coin in coinmarketcap.com
you are right, bitcoin investment is the best but bitcoin is to invest in a long period of time to get a big profit, there is a fast way to get a quick profit that is Binance Coin investment because has been runner recently and is a strong bull trend while moving 250% + against USD