I bought Doge years ago at a fraction of the current price and I've been parking them in a casino's bankroll for quite some time now. No clue where it's going though, it depends massively on the Doge community.
That is right. However, there is no much good use of the coin at the moment.
Well, the only good use for Doge and the reason it's on so many exchanges is that it's a good coin to base a price around. For instance, if a coin is worth fractions of Litecoins, then you're probably better off listing it on the Doge coin market. It's just perfect currency for really low valued coins.