POW mining is going to be outdated very soon and the evolution of cryptocurrecnies are already shifting to DPOS based mining and that is the future also, and if you look at online market so many old miners are selling their old mining rigs and mostly chinese people are selling their mining rigs. here I would like to mention that china used to be the hub for 25% of the mining. But now a days even Chinese people are also no more interested in mining.

We must also remember that POS is not only cost effective but also environment friendly.

And my all time favorite crypto is EOS and this is my darling and its the crypto this generation and just mark my comment here in 2018 it will cross 100 usd for sure.

Thank you @cryptographic ....steem on and stay blissful...