Why don’t you buy coins and mining using the pos algorithm?
There will be more profit and equipment will not become worthless. Try starting a node for example.
Honestly, I have some coins that I want like zcoin to run a master node or they call it znode but the required amount needs 1000 coins which is too expensive I can't afford the znode that is why I'm looking for another coin that has potential to grow I the future. POS is another alternative good for staking coins but which coin do you think will grow in the future or even just listed it to big exchanges because I believe if those new coin pow or pos coin listed on big exchanges they have a chance to grow. Am I right? Correct me if I'm wrong...
Keep in mind that revenue from masternodes is not considered passive income. Also you need to be good with security to run a master node because since you need the coins in your possession you might always get hacked if your security isn't up to date.
The reason why it's not passive income is because you are not paid in BTC or fiat. You are paid in the underlying coin and looking at the alt coin index for the past year it has been pretty horrible.
So you would make a profit with your alt coin but if the value of that coin dropped with respect to BTC or fiat then you are losing money anyways .