Wow, This is a very crazy prediction. I don't think it's possible for Doge Coin to reach 20k in 5 years. Moreover, we know this coin used to be just a joke. At the current price of doge coins, doge coins have to go up by 60,000x to reach 20k. It's impossible.
Even though Dogecoin is made just for fun, its trading volume is always more when compared to new Altcoins and other meme coins because Dogecoin is a very old coin out of all the Altcoins that have advanced at this time, so in general it is still very good although it is impossible to experience an increase of 60,000x