Smash It

I have seen this picture posted on Facebook a lot lately. Basically it says that all spiders should be killed.

Why is it that we value some forms of life so much less than others. Spiders are actually beneficial, much more so than many of the pets people have.

Yet if I created the same image and used a bunch of kittens instead people would be outraged. Seriously though why is it OK to kill spiders without taking a second thought, yet not OK to do the same to a kitten.