This House would ban animal testing

In what way are humans much more important than animals? You give no basis for how you reached this conclusion. You mention the 'worth to the world' I rather suspect that given the amount of damage we do to the world if the world was sentient it would consider our worth to it considerably less than those other animals that just do as they always did without digging great holes in the ground, blowing up immense bombs, exterminating other species, changing the climate etc.

I partly disagree with you. First, humans are not “much more important than the animals in the sense of their worth to the world.” What did human do to the environment, or the world to benefit it? We polluted tons of contaminant to the water every year, every 60 second a soccer-field large forest will disappear; there are 12 kinds of species become extinct every day. However, for sure that human needs animals to test the newly invented things, especially the new medicine, because the danger is extreme. That’s the function of the lab rats, even though, I still think that human used lab rats too much. For example, some companies use rats to test the perfume they make. It totally unnecessary since there is no serious danger for human to try that, but the lab rats are too weak to afford the perfume. So in general, I think human should only do animal testing in medical aspect.

animals did us no harm why kill them

'inhumane' I assume the very word comes from 'human' which is something they are not. Ultimately we seem to care more about our own species and seem to take the view that if we can save lives of humans due to animal testing then that is a good thing.

Are you a vegan? If not why not - when eating animals you are causing more than hurt to an animal, you are killing it. I think that this debate is linked with all other animal "rights" debates whether they are about the concept, testing, eating them, or using them in sport. We would do none of these things to other humans so if we consider animals the same then we would not do this to animals.

But the fact is we dont consider animals equal to humans. Animals themselves accept they are in a 'dog eat dog world' (to continue your theme) and seem happy to kill each other and that is what we are; the top predator. We have always used animals and there is nothing wrong with this. It is no more wrong to test animals for diseases or whether products will harm humans than it is to eat them.