Yes i shoud and we should believe because it can amazingly do possible things that mostly fast transactions online specially of online wallet payments like loading mobile numbers, bills payment and more. Trading altcoins is one of the profitable of bitcoin is one thing proof that we should believe with it and its use also for fun in gambling and online selling.
That is just very few good things that bitcoin can help us with. And I would say if you are an aspiring investor, then you should also believe in bitcoin for it has a very promising future, whether you are early adopter of it or not still you can enjoy the possibility to get good amount of profit if you are just going to believe and invest in it.