Lots of people are holding several coin, this because of the bearish market. Why would anyone hold a coin since 2017 and not take profit, till 2019 , i think the reason should be greed. I believe people holding coins are people who got in 2018 ,most people even regretted holding,because till date, prices haven't recovered. The truth is, continue holding till the bullish season, because selling now will be a waste of effort.
selling will be a waste of energy if you are not a professional trader. In that case, you really should just hold your coins and wait for the growth