What gives us the right to dominate and industrize other animals, turning them into products such as meat, milk, fur, glue and others.
What gives us the right to exploit all the resources of this world into our own benefit?
I hate it when people think of themself "overall I think I am pretty nice guy", while they are actually just far from being it. Because all humans are "not good".
In other words, will you cry like a baby when another alien race come to this planet and decides to make products out of humans such as burgers and soap?