Investing in Bitcoin is the safest because it has been in the market for a long time with reliability. If you can continue to invest in it correctly for a long time, then you will definitely have the chance to achieve the most success. If you never invest in Altcoins other than Bitcoin, then your investment is more likely to fail. And if you invest in Bitcoin, your investment will definitely reach its results, because it has been in the market for a long time with reliability and its price will increase more in the future. So I say investing in Bitcoin is safer than keeping money in the bank.