Well, Shit-coin is a shitcoin. They usually have little value or no value at all. Many-many creators made a lot of coin supply to be airdropped and each coin probably 0.0001. That's a shitcoin right there. It will only became a trash in your wallet, so there's no point holding them in your wallet 
We have two shitcoins in the top-10 list from Coinmarketcap (Dogecoin and Ripple), with a combined market cap of $100 billion. You may still be able to defend XRP, but what about Dogecoin? Anyone who is aware of its history will not deny the fact that Doge is a shitcoin. It was first created in 2013 by Billy Markus and Jackson Palmer, to mock the very idea about cryptocurrency. The most ironic fact about Doge is that the promoters never took their invention seriously enough. Else they would have been billionaires by now.