Yes Dogecoin is legit and a good alternative to escape from paying outrageous transaction fees from bitcoins, or other currencies. You can always convert your coins to Doge then convert it back again to BTC or ETH when you are ready to withdraw, in this way you will just be paying a small amount of transaction fee. The prices of Doge is quite stable so it is easier to manage when transferring from coins to other coins as you can easily determine the price.