Even though many animals are more vicious and murderous than humans, they aren't intelligent enough to know the pain they inflict, and mostly do it for survival.
Humans on the other hand, collectively, including me, are just a bunch of ignorant, selfish, greedy, evil useless entities, as a whole we are destroying this planet, not making it better.
If humans died, the planet would be better off, if animals died, the planet would still be destroyed eventually.
Although there maybe time to become better.
When it comes down to individual choice though, it's obviously going to be whatever I care about most, or what I think is more important to survive.