Do you think that 2019 will be a good year for Altcoins ? and if yes which of them will performance the most ?
There hopefully won't be many more years which are good for altcoins in general. The market needs to shed the thousands of shit coins and be focused on the handful of projects with true promise. There's no reason why shitcoins should be doing 10x or more like we saw throughout the last bull market.
I do agree with your post and of a truth there are many reasons why the cryptocurrencies market fall from December 2017, throughout 2018 and now 2019! One of the reasons I have think of is we have many shitcoin that are not contributing anything to our society but some of them were having huge value in 2017. Now everything has fall down and those altcoins that has significant values and products are going to enjoy the next bull run that may start around August this year in preparation for the bitcoin halving in may 2020.