I agree with you about the mass adoption. But when some of the largest exchanges haven't adopted yet, its a joke. I read that Bitpay will finally be getting Segwit Wallets as well in 2018. Hopefully it starts happening soon. The Lightening Network and all the other cool stuff is waiting for that to happen.
RE: Bitcoin fees as high as $50, transactions still slow to confirm, new messaging system on BlockTrades