I think that population control should improve, but that doesn't mean we should kill people or make abortions, but improve education. Control population is not make population to decrease, but make it sustentable.

A population decrease can be bad as well, like in Europe, which is going to be the old-people home of the world.

Planet and its animals destroy many of us (nature lovers o not) every day...  nature doesn't matters about us, it isnt good or bad, so I dont care about its health more than about the ours.

 In fact, we are part of the earth, and therefore, kill ourselves implies kill the earth.

I like people that have no kids, because they are giving space for my future ones.