Hi,
Im new to trading, there are so many coins and I keep reading about bitcoin being unsustainable regarding energy it uses to mine and there are coins coming out with faster transactions time.
If you believe that bitcoin is unsustainable regarding energy it uses then you are generally saying that all industry in the earth is unsustainable because they are more energy hungry than Bitcoin mining. In short, I do not agree that Bitcoin mining is unsustainable, there are lots of renewable energy sources that can be used to supply the energy needed by Bitcoin mining that is already available in the industry.
If this is the case, Why is bitcoin considered the main one and its price not crashing from the threat of these other more equipped coins?
Bitcoin is the main one because it is the first one to implement decentralized blockchain. And lots of people wanted to escape the tyranny of these centralized authority of financial institution.
Is bitcoin still able to develop and evolve and become energy sustainable and compete with faster transaction times if it is decentralized? No one is able to improve it?
Bitcoin is a technology so yes it is able and capable of evolving and be developed for faster transaction. Developers are working hard to find solutions for Bitcoin to scale for global usage, one of which is the Lightning network and I believe there will be lots of improvement as time pass by. As of the energy sustainability, it is out of question, it will be sustained.