That's right, we don't need to worry about the future of bitcoin. Increasingly, more and more people are adopting bitcoin as a globally trusted decentralized system. People see bitcoin in the short term worrying because they don't get the benefits they expect.
Bitcoin will stay on the circulation in the market and value won't end because it is adopted even in businesses as the goal as new payment method. People just worrying because they cannot get profit for short term but it is just a beginning for new adaptors and investors. It is an opportunity to new investors because it is more cheaper to start with.