Useful tick?

What an oxymoron. But apparently it is true, ticks have been found to be useful for something fairly important. The saliva of the Brazilian tick holds promise to scientists researching cancer. Read more about the discovery here. But don't expect to come away with a newfound love for ticks. What I did come away with, however, is a greater respect for all things large and small, seen and unseen, that exist on this planet. There is surely something that can be exploited for human advancement in every thing. At least that's the impression I was left with after reading another spin on the discovery of this tick spit. The writer was emphasizing how we should work harder to conserve the animals and plants that are going extinct because we never know which ones will be useful. To us. And it seems that is the slant for many conservation efforts. I'm human, and of course I benefit from discoveries just like everyone else. But it's an awful anthropocentric viewpoint. Can't we just save a species because it's the honorable thing to do, when its within our realm of influence to do so?