I strongly agree on you opinion that, as long as the internet exists, bitcoin will remain there anytime. And adding also my opinion that, I think that Bitcoin will last a long time because the technology is evolving right now and so will be in the future. And I think that most people will use virtual payments and how would it be better than via Bitcoin. In addition, I think bitcoin not lose as soon, bitcoin is a hope of huge amount of cryptocurrency traders and bitcoin is a payment medium of many projects and ico's. On the other hand, It's unpredictable, but it will still be a long run for bitcoins and other cryptocurrencies.