Actually Dogecoin's a good coin, however because its supply's too much and too easy to get especially in the market, so no wonder if this coin will be a boring coin and tend to be abandoned by its users.
Contrastively, I think it actually very useful with cheap trading fee, fast transferring and so many exchanges listing it. So that people, especially traders like it, and frequently using it. It is actually a crucial coin in the cryptocurrency world.