I completely agree. And I am fully subscribed to Bitcoin's fungibility.

I was just responding to Z-tight's post. That reply of mine wasn't representative of my stand on this specific issue. I don't believe that one Bitcoin is purer than another. There's no single Bitcoin in the 21,000,000 total supply that is more Bitcoin or less Bitcoin than the rest.

While coins directly involved in crimes should be tracked, intercepted, confiscated, or returned to their rightful owners, it doesn't mean that those coins are dirty and aren't acceptable for circulation.