Human life is more important to us because that is how we view it.
Yes, and I could say human life isn't important because that is how I view it. An unsupported
personal viewpoint is not logical support for a claim.
We are the smartest, most capable creatures on earth
I thought Myndfyre established that this debate should not seriously consider intelligence, (probably because arguing that humans are different because they are intelligent does not bode well for the anti-abortion stance when comparing fertilized eggs, and even many humans, to certain animals). I'm also pretty sure that you conspicuously agreed with him.
Besides, what are we most capable of?
we dominate every other creature.
That seems more despicable to me than valuable. Why should this mean that human life is more valuable than other life? You would then agree that all predators are more valuable than their prey, because they can "dominate them." For example, a mite is more valuable than a bee, because mites can dominate populations of bees; yet, the survival of many species (including ourselves) is closely linked to bees practicing pollination.
I believe it has been scientifically proven that we have the most complex brain, we obviously have the most complex thought processes
Are you again arguing intelligence? I guarantee that it hasn't be scientifically proven that we have the most complex brain. Likewise, it is not obvious that we have the most complex thought processes.
I think that seems like a good reason why to value human life so much
I don't think any of the reasons you have listed are very good. It mostly seems like you're saying
"we're better because we say we are." That just doesn't cut it in logical debate.