No, our species isn't 'better', our species holds a special place as a significantly more intelligent species, and in no way is that 'personal feelings'.
http://www.livescience.com/33376-humans-other-animals-distinguishing-mental-abilities.html
Whether you want to say that's by design or random chance, we are the only species that would be intelligent enough to 'take care' of the other species and the planet. I think you think I'm being purely religious here, but even if you take creation out of it, implying that humans are only minutely different from other species does a disservice to the value of human life.
Put it this way, you can't put human and animal lives on equal value footing, yet also stratify values of certain human lives over others, which you're quick to dismiss those you deem to be below you in intelligence or belief as not having value. You can't say certain human lives have little value then lament that we kill each other out of the same type of devaluation.