I was just looking at the coinmarketcap table since 2013, I was surprised in what I saw, many coins topping the charts then are now almost non-existent, we need to be careful of the kind of coins we hodl especially for long term. Most of these projects just die after the initial hype.
thats why we must do our deep research first before decide to invest on any cryptocurrency my friend
and dn't forget to think about the risk and rewards,
anyway, for me the safest alts to invest in long term is the TOP 10 alts in the coinmarketkap