I don't know if it's just me but I've always struggled understanding the appeal of certain altcoins. The only two coins I see potential in are Ethereum and Bitcoin. Ethereum has amazing potential with smart contracts, EVM, Solidity etc.
Litecoin - Charlie Lee did a copy/paste of Bitcoin and made a few minor changes, doubled number of coins, changed algo etc. Sure Litecoin beat Bitcoin to adopting SegWit, and will probably get a stable Lightning Network before Bitcoin, but let's be honest, Bitcoin will also implement the Lightning Network in the future
Bitcoin Cash, Bitcoin Gold, etc. - worthless ripoffs of Bitcoin. Bitcoin Cash is good for only pump & dump, Bitcoin Gold was heavily pre-mined, get rich quick scheme
Dash, Monero, Zcash - "Wow, a coin with anonymity. That's amazing!" Cool... I can just put my Bitcoin in a tumbler
Ethereum Classic - completely worthless shitcoin without Vitalik. Hardly supported by anyone in the ETH community, won't get any of the Milestone updates like Byzantium and Constantinople that Ethereum receives
I know there's arguments for using different algos like with Bitcoin Gold (that mining with GPUs is more fair to the little man), I'll quote my argument from before on why BTG is worthless:
I think the concept behind bitcoin gold is flawed though
their reasoning behind the Equihash algo is preventing ASICs
because BTC mining now is mostly controlled by large companies with ASICs
but it be just the same with BTG, since large companies have a lot of money they can afford the most equipment
Curious of other people's opinions, personally I think in 20 years only BTC and ETH (possibly XRP too) will have any value.