If you could rid the world of one thing what would it be #ridworldofonething

This picture popped up in my newsfeed on Facebook and I was like wow! What one thing would I choose?... At the time I jokingly posted FLEAS because they are especially bad this year and have given my dog fits not to mention we have had to fight them inside and out.  I'm thinking "hate" would be a good thing to rid the world of.  What do you think? What would you choose and why?

Bright Blessings
~Rayven~