Litecoin is the cheaper version of Bitcoin, potentially a good successor in case the dominant cryptocurrency will be gone. Litecoin considerably has some advantages over bitcoin considering its 84 million supply and faster in terms transaction compare to Bitcoin. It may not pass Bitcoins dominance but it will be more established than any other coins in the market.
When the altcoins “Golden age” comes, Litecoin will jump high. This is still one of the best alts of all the time, although the project is pretty old. I have LTC in my portfolio, but now, I use it mostly for trading. Litecoin is presented on almost all exchanges.