This is a vastly simple way to look at it. You need to buy a thing from someone who has some? Yes checks out, object must already exist before it can be sold to someone else. Goes for houses, booze or racehorses too. Yes, in fact every thing ever sold ever is simply enriching the person that is selling it to you. And we can’t have that can we?
I’d also add that I do not regret it. I’m sure the person that sold me my coin does regret it ;-)