What's 'worse' thermal coal, facebook, or bitcoin

What's more objectionable?

1. Coal miners - most of asia will need thermal coal for decades to come, but global warming!

2. Facebook - amazing communities, but so much toxic information and exploitation The Silent Partner Cleaning Up Facebook for $500 Million a Year

3. BTC - as the "killer app" of the block chain, digital money has incredible potentional for disruption and inovation , and BTC specifically an incredible network effect, but requires tremendous energy to be expent to "secure" the blockchain.
Internet and Blockchain Will Kill Nation-States

 

Which is worse?

Well despite the cons of each at least coal serves a useful purpose, facebook is a fairly useful means of communication and connectivity, bitcoin however... I dont speculate in it, and to date I dont know anyone who has found a use for it other than speculating.

I vote option 3 as the 'worst' ( although the vigorous retort from the BTC fan boys is always priceless)

 

What a difference one year makes...