If you define these things more clearly, you can make better decisions.

Bitcoin is not an investment. It is money (not a currency). Money is a currency that can also be store of value (fiat is currency). To be SoV bitcoin needs to have a capped supply hence the 21 million cap.

Ethereum is not an investment. It is also not a currency or money. Ether is fuel for smart contracts which means it has to have an unlimited supply. It needs to be constantly created so that people can use it to create shittokens (aka ethereum smart contracts).
In fact I'd argue that the value of "fuel" should be kept low in order to keep it useful which justifies the unlimited supply but at the same time since Ethereum is centralized and the centralized authority of it wanted to make a lot of money from their premined stash they pumped it and with the ICO craze and the pump that it brought, the price of this shitcoin went up.

That's a different discussion though. Shitcoins can be profitable when they are being pumped for day traders. But they can never be an investment so nobody should ever bag-hold them.