If you've followed the crazy situation at Knight Capital (NYSE: KCG) at all, you probably know that Goldman Sachs (NYSE: GS) was involved. Somehow that always seems to be the case, doesn't it?

In a few different news articles, I've seen the word "helped" used in describing Goldman's involvement in the situation. That's a pretty charitable way to put it. In fact, Goldman saw this as a great business opportunity -- it took a steamy mass of dumb purchases off Knight's hands and was paid $440 million by Knight for its troubles. "Help" and just generally being a good financial-market citizen had nothing to do with Goldman's decision to step in.

What's interesting is that Goldman is far from the only investment bank able to handle something like this. JPMorgan Chase (NYSE: JPM), Morgan Stanley, Bank of America (NYSE: BAC), and Citigroup (NYSE: C), among others, all have the capabilities and the balance sheet to tackle this kind of trade. Yet it was Goldman.

A very plausible explanation for why it ended up in Goldman's hands is that Goldman is simply better than the others. Or, at least, it has confidence in its ability to handle a block like that and was willing to not only do it, but also do it on short notice and potentially offer a lower execution price than anyone else that might've been willing to take it on.

But pardon me if I put on my Matt Taibbi "Goldman as vampire squid" hat for a moment and wonder: Why is it that when there's a financial disaster like this, we could expect that Goldman would show up for a feeding? During the financial crisis, while everyone else was on the verge of sinking from errant mortgage exposure, Goldman was on the right side of the trade and raking in profits. Now a major market maker finds itself on the verge of extinction, and Goldman pockets nearly a half of a billion dollars for services rendered.

Pick your poison: Goldman as best in the business, or Goldman as crafty vampire squid. Either way, one thing seems eminently clear -- it's good to be Goldman.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.