Yes you should believe in the bitcoin because it has a great future and it wil grow a lot more than it is right now.
Everyday there are more people joining and believing in it too!
And all of the people here are believing that bitcoin is going to have a great future. Because if we are not here then we are not believing bitcoins.
A lot of bitcoin experts say that it will proved and will happen in the future. So if you are not going to believe bitcoins today.
Then you are going to feel sorry about it and regret it.