There is a popular saying that invest only what you can afford to loose. Some people are making the mistake of investing all their life savings into crypto and other ventures. Some people even went as far as borrowing money or even using their properties as collaterals to borrow money so as to invest into crypto. This is a wrong idea and it might cost you a lot.
Every investment has its risks. So consider the the risk involved by taking each step at a time and do not jump in once.
You are right , people tend to invest all of their savings. They dont think twice before they make decisions so some of them regret it. It is risky to invest so you better have knowledge and strong positive mind in order to surpass the challenges that you may encounter while investing.