"...when people thought the earth was flat, they were wrong. When people thought the earth was spherical, they were wrong. But if you think that thinking the earth is spherical is just as wrong as thinking the earth is flat, then your view is wronger than both of them put together."
This quote is taken from an essay written by Isaac Asimov. When I was ten or eleven I discovered science fiction...the genre has remained a staple of my reading habits ever since. There are few authors in the field that are the equal of the late Isaac Asimov...partially because he was a bright and insightful individual.
I was struck by how relevant and applicable this thought is to the notion that all sentient beings have the right to live their own lives however they want. This may not be perfectly true...but if you think it is as untrue as believing that no living beings except human ones have such a right...."your view is wronger than both of them put together".
Truth, rightness, goodness, accuracy...all these terms refer to something that is, in the end, fuzzy. But if you think the notions of animal rights are just as inaccurate or fuzzy or as wrong as the way human animals now behave toward our fellow living beings. You're wronger than all "of them put together".