This coin was created as a troll, has never had a specific purpose. What I know is that when the BTC collapses people that doesn't come out on USD enters on coins such as DOGE to look for some profit before getting back on BTC
Funny enough it is still the same doge and people will keep using it for tips. It is amazing though seeing it doing well in the market despite the unlimited supply and the way people perceive the coin. Even the devs really do not have anything to do with the coin anymore but I saw the pump coming anyway as it could just be some retracement.