Yes Bitcoin was my first investment 3 years ago and I only had this one until now. I wanted to see some more and just explore a bit more. But my dad kept telling me to look straight ahead so I always do some research before investing, especially if it looks suspicious like the Rainbow. It's a shame because there are projects that could work well without the scam. If you have good plans I'm also a taker
What your father suggested is true because it can help you have more than 1 type of investment. If you can, you spread your money across many types of investments to help you get a lot of profit. I'm sure there are still many good projects that won't fool investors but indeed, it's hard to find good projects these days. But if you're having trouble finding other investments, I think you can still invest in bitcoin.