I personally never used altcoins, but I write about them a lot and obviously research a lot about them as well. Altcoins are good alternatives for websites that offer users ways to gamble (casinos, sports bettings, gaming online and so on). They are not such sought after coins in the market and in fact all you can do with them is pretty much use them to play online. Reliable websites do not accept them yet (sites like Amazon, and so on), as we are still slowly "trusting" bitcoins...I mean websites where you can actually shop .Altcoins are the poor brothers of bitcoin so I would not expect them to take the market anytime soon, after all not even bitcoin is so incredible anyways. I am a practical person, I want stuff to work and not have to wait forever or even have to find weird websites to use my coins. That is why I prefer old "real" money.