i believe that in 10 years bitcoin will no longer be minable (they will be finished), maybe we will all undermine bitcoincash or monero, however so much power makes an impression...
Mine-able yes, profitable no. There will always be a group of hobbyists willing to mine for fun, or with "free" (renewable?) energy available to do so. Also the asics are getting even more efficient, so Cannan's idea of embedding a few asic chips in common household appliances will return. Yeah, your smart fridge/ac/router/tv/heater/whatever might have 1~10 THs, why not?
Its like getting one of those usb mining sticks and plug it permanently into your "smart" tv, just because you want to help the community and it doesn't make you go bankrupt anyway.
I know i will probably get into that group, with a node as well, because its one way i can help and thank Bitcoin, for letting me eat today, when the politicians and institutions stole our wealth and nobody else cared.