Putting it simply, a world without humans is a world without meaning. I believe the whole reason the Earth was created was for humans to inhabit it. It might be better, but it will have no purpose.
Imagine the world without humans
I imagine this world being a llot more cleaner than it is now, but less advanced. I mean, they the societies within the races would be balanced, and nothing would get endangered nearly as fast.
The animals would be glad about that I'd say and they'd benefit more from that than humans themselves. I mean look at us, how the world comes to be after years pass only few realise what it means to have peace. We fight, destroy and kill others, some people just because of the sake of it, others just because they don't like something about someone. Others because if they don't, they themselves might get hurt or their families. Look how life becomes after we become worse than animals themselves...