If you go out for drinks with a friend and you buy that friend a $7 beer, are you "buying friendship"? What about when they buy a round? The question to think about is how much is $10k worth to you? If you've already got money stuffed into index funds, 401k, Roth, along with some off the wall investments, and you've got your ears open for something that might beat the market in 10 years, an angel investment opportunity for $10k really isn't that much money.

It's a different financial strata than most live in these days, but to think of it as purchasing friendship is to misunderstand just how rich some people are, and how the bubble they live in operates.