When DOGE is going up, people start thinking that it actually has a shot to eclipse Bitcoin and completely take over the financial world someday.
Personally I don't think it will completely die (you can thank Coblee for resurrecting it from the dead with LTC AuxPOW, God only knows why he bothered). But I don't think it will get far beyond a niche group of enthusiasts either. The same can be said for hundreds of other alts, they'll still be around too.
DOGE has big, strong potential to become "the funny face of cryptos" so to speak, when it goes mainstream (crypto). No one on it's right mind belieces DOGE can overtake BTC.