Just like stock, you can invest all your money for a coin code if you really trust. But that would be very dangerous. One can make sure that the coin will not fall down to 0 a day.
The advice is to diversify your portfolio. That will help reduce the risk. You do not earn much but if not lost also much.
Yeah, trust is also one of the thing you must to do in investment. But the thing is for you to have a stable thing to have a stable i Ageneto get your needs and want that can be used to have a profit for yout famity.