Hi guys, have you ever thought about blockchain? If it is really revolutionary technology? I am reading many pessimistic opinions and articles, that it is not good technology. For example speed and massive adoption, we see this problem in Bitcoin blockchain and the transactions on blockchain, because it is the oldest one and there are the biggest number of transaction stored in blockchain, will this happen to every altcoins in the future? Will the Lightining network solve this problem? Why the Lightning network is not fully released - thanks to the miners - they want bigger rewards or? And what about mining - what will happen if we invent a quantum computer? Could we really trust in decentralized anonymous transactions in today's world?

Looking for your replies.