ETH in 2018 was very poor and many people were disappointed with all this, I was very curious why did this all happen? Do you think that ETH is a scam altcoin and will ETH rise again in 2019 or will ETH disappear?
What make you think that " ETH is a scam altcoin" 
. Eventhough 2018 is not a year for ETH, it will not disappear.