Haha, na. That was just a co-incidence. You're right, we're cruel & greedy species. We're destroying the whole food chain/web. You know, if we finish cockroaches, from the world (Which is already at the extinction), cockroaches is the favorite food of the sparrows, and if they're finished? Guess what? Sparrows will also extinct. Likewise, it was only a example, but we're doing it with many other species too. You know a fact? If mankind is finished, then nothing will be effected, in-fact, things will be more better.