I believe because bitcoin will definitely improve and it will go up. and also, I think will many people using bitcoin to benefit so that bitcoin is more trusted.
I think not everyone can make a profit on bitcoin, even if you believe and are sure that bitcoin is profitable for everyone, but in fact could have been bitcoin disadvantages for others. I think the sense of trust is not it. You just need to believe that bitcoin has a bright future
Not everyone can do it but the most will because its easy and with investing you can already make some good profit by the bitcoin.
It has a great future too so the most will.
I would say that in bitcoin industry this is the easiest industry where you can earn some real money even you don't have investments.
Because what you just need to do is to learn on what type of earning you are going to focus with bitcoin and for sure when you have mastered that.
It is going to make you say that it is worth to believe bitcoin.