1. Bitcoin is Highly Volatile: you need to understand that Bitcoin is highly volatile in nature meaning it is not constant in it's price the price changes every minute meaning it rises and falls frequently
I've seen investors who have that YOLO mentality, everything that they have invested on Bitcoin.
Because of this volatility, some people are trying to go for a high-risk, high-reward strategy and goes all in when investing in Bitcoin thinking that they would make money quick. But in reality, if you don't have the right knowledge and experience, it usually ends up in them losing their money instead. Just as the saying goes: "Do not put all of your eggs in one basket". It's important to diversify your assets in order to minimize risk and potentially provide more consistent returns in the long run.
2. Protects You from Emotional Stress: If your important and essential funds are tied up in Bitcoin you will be panicking at every dip that happens in Bitcoin which will cause you emotional stress or even lead to shock that can end your life
Some people also become victims of FOMO and think that they are missing out on the opportunity which lead them to making terrible financial decisions. I found that the most common suggestion by other members is to do your own research (DYOR) first, and don't invest what you can't afford to lose.