Coins you had but gave up on?

This is one question I enjoyed on r/CryptoCurrency so I’d like to raise the question once again. Are there any coins that you once held but gave up on? Why did you stop believing in that coin? What was the final straw that made you give up?

One such coin for me was Lisk, while I thought and still think it’s a good coin I just don’t see why someone would adopt Lisk over Ethereum or any other the other myriads of good smart contract-based cryptocurrencies. I could definitely be wrong but I felt like it wasn’t worth me holding it.