Read and think:
For both ETH and Dogecoin, the total supply is unlimited. I don't mean that Doge will reach $ 3,000 (like ETH) ;)
The dogecoin Market is based on the famous law of supply and demand.
Note:
Dogecoin max Supply (today): 129 billion.
Dogecoin Yearly (Max) additional: 5 billion coins (3%).
Dogecoin doubling supply time: 26 years (read again 26 years.! No reason to fear the unlimited total supply).
Ethereum max Supply (today): 115.51M.
Ethereum Yearly (Max) additional: 18 million coins (15%).
Ethereum doubling supply time: 7 years.
It's always worth buying a few Dogecoins.