there is still only bitcoin worthy of long term investment aka holding. otherwise from early days there has been other altcoins which people bag held, for example Litecoin was around since 2011 and many people have been bag holding it thinking they made a long term investment. obviously price of LTC is higher than 2011 but that doesn't make it a good long term investment when there is bitcoin which went from $2 in 2011 to $20k in 2018.