Why would you ask if bitcoin have a future? Don't you believe it has a future? I myself believe it is the future, imagine before it was almost worth nothing but look at its value now. I bet Satoshi Nakamoto wouldn't believe it too it has reached almost $3000. So to answer your question, my answer would be Yes without a doubt it has a future.
It has future if we believe in bitcoin but maybe satoshi nakamoto did not expect that his creation had reach almost $3000 dollars. I myself believe in bitcoin too and it will go at $5000 or $10000. We need to have faith on this.