Even though dogecoin was created just for fun, the dogecoin has managed to remain fairly valuable over the last seven years.
Created for fun is a marketing gimmick. Doge was created as a scam. But very soon they decided to add big enough tail emission so they make that scam premine irrelevant. Doge is just a normal coin. Just like Bitcoin, Litecoin and 1000 others. Copying Bitcoin. Nothing fun, nothing meme nothing, ... A working transparent ledger coin with known issues that such coins have.