I don't really expect to convince you of anything, but I thought I'd at least challenge your view on dogecoin and crypto in general.
The vast majority of people who exchange to dogecoin use dogecoin. Yes, there are some people who invest in it in order to make money, but that isn't any different from any other currency. You could invest in euros by buying up thousands of them and then waiting for the exchange rate to go in your favor.
Also dogecoin is built in with a protocol that adds coins every year, thus acting as inflationary pressure, the same with most fiat currency. So the number of doge is non-finite, which means that in the future, the power of 1 doge will decrease, just as the power of 1 USD has decreased over the last century. This creates the incentive to actually spend and use the currency.
This is compared to Bitcoin and Litecoin, both of which have a coin cap. Only a finite number of coins will ever be mined from BTC and LTC. This makes them much more like stocks.
This is what distinguishes currency from commodity. While a currency can be a commodity, the reverse is rarely true. (At least in society as it is right now.) Dogecoin is striving to be a currency. Within the community, while exchange rate is important, it's ultimately arbitray, because 1 doge = 1 doge. It's a currency meant to be used as a placeholder of value for the exchange of goods and services. This is the same as every other currency in existence, the only difference is that dogecoin isn't tied to any nation's economic outlook or GDP or what have you.
But let's just leave that by the wayside for now, because all cryptocurrencies offer the same service: They're anonymous and highly untraceable.
The only indentifier of a transaction is a randomly generated transaction ID and two randomly generated addresses. There's no way to track which computers host those wallets ore any information of the people who are involved in the transaction.
This is what cryptocurrency's primary role is: To serve as a secure, anonymous transaction system. So even if there are people pumping and dumping cryptocurrency, for the majority of users of the coin, it's arbitrary what the exchange rate is. It's just another currency that's being used to exchange for goods and services. In fact, because of the instability that pumping and dumping cause in the exchange market, investing in doge as a commodity is generally discouraged. Exchanging to the coin to use the coin is what people most talk about.
My $0.02.