investment doesn't have to be in Bitcoin if you insist on investing only in bitcoin I'm sure in the future you will regret it,
because there are still many potential altcoins that can make you get 100x or even 1000x so look for altcoins on Coinmarketcap and analyze them first.
There are many altcoins that have bigger volatility, but the risk is higher than investing in Bitcoin. If you want to take a bigger risk, then it is okay to invest in altcoins. But if you prefer to invest in a safer coin, you should choose BTC.