Your question is good but in this modern civilization who still can't trust Bitcoin is nothing but a fool. If you compare Bitcoin 10 years ago to Bitcoin today you can see how much Bitcoin has changed. And how popular Bitcoin was when it was first in the market and how popular it is now. These are only possible because of people's faith and trust in Bitcoin.Now people believe that Bitcoin is our future asset. You will notice that Bitcoin is being legalized in almost all countries and all major countries are interested in doing transactions through Bitcoin. They understand the use of Bitcoin.You yourself will understand the use of bitcoin one day but do it as soon as possible because very soon all countries will be using bitcoin and then you will call yourself a fool just like now the people who believe about bitcoin are calling themselves fools. If they believed in Bitcoin 10 years ago and knew about Bitcoin, they could have profited a lot today.