Data Shows Bitcoin Was Proclaimed ”Died” 90 Times in 2018 Whilst Almost 1,000 Altcoins Disappeared Completely - Toshi Times
Down More than 70% in 2018, Bitcoin Closes It’s Worst Year on Record - CoinDesk
Perhaps a more stable and sustainable 'altcoin' or alternative currency would be the 'green bitcoin', of which there are already several on the market:
GreenCoin 🌏 (GRN) - Crypto Currency born to finance green technology. Forked from Bitcoin Green Renewable Energy Coin
Here's a handy video which showcases one of these:
Bitcoin Green is a proof-of-stake, transactional currency designed to provide a scalable and sustainable alternative to Bitcoin.
Bitcoin Green (BITG) is founded on 'The Green Protocol,' which utilizes a highly efficient proof-of-stake consensus algorithm that solves many of Bitcoin’s sustainability and scalability problems. Furthermore, Bitcoin Green can be mined on any computer or laptop without specialized equipment.
Bitcoin Green, the organization, aims to shed light on a number of critical issues facing proof-of-work based blockchains and raise public awareness for the environmental and economic problems arising from such issues.