Bitcoin, ethereum and some other cryptocurrencies will hit all-time-high again.
bitcoin will because it is useful and it has a cap.
but a coin like ethereum will never be able to reach its ATH simply because the only usage of it is to be an ICO platform which is dying, and it doesn't have a cap. it already is unlimited so it can not rise in the long run even though it will see pump and dumps.
Technicely, the second half of 2019 would even be more boring than that of 2018. Markets will be slow, volatility will be slim... traders wouldn't make much at that period.
there is nothing boring about a stable price, at least not for bitcoin. and as for altcoins not all of them are stable. we already have a lot of pump and dumps going on which if you were a trader you could make a lot of profit from.
over 60% of cryptpholders are newbies...because market will be flat in it's low for over 11 months...
both of these statements are your guess and you never explained why you think that way. for example why do you think that rises are going to take 2 full years (starting from the beginning of the drop until next 11 months)? that simply is impossible, it is too long.
this period of flat market movements is enough to burn those 60% out... particularly those who went all-in
weak hand newbies are already flushes out. so your logic doesn't make much sense to me.