What are some real limitations and cons of Cryptocurrency & digital assets that nobody talks about?

I think one of the real limitations of crypto is their environmentally impact on the environment.Here is a quote by Forbes on jul 8,2019. "It found that Bitcoin uses an estimated 61.76 terawatt-hours (TWh) of electricity per year - more than many countries and approximately 0.28% of total global electricity consumption" This will have important impact on the energy industry and climate as the every increase usage of energy is too bad for the environment if we continue to use Fossil fuel for it.

I think that it is mostly very volatile lor and it can be a hassle to use it for everyday transactions