Next to Bitcoins there are several different other crypto currencies like DASH, ETC, ETHEREUM, LTC, XRP. Do you believe in them? Are there any Advantages and/or disadvantages?

ETHEREUM and XRP and Dash are good to compete with BTC, about ETC , i don't think it has a good future.
LTC is a simple clone of BTC, to me it's a shitcoin .Nearly no developments for years, why does it still in top 5?I don't understand.