It is something I had always thought about: Zendikar is one of the most marvellous fantasy worlds I've ever known about. Browsing through the Planeswalker's Guide To Zendikar is always great, the artwork is top-notch and awe-inspiring, and even if it's rather filled of cliches here and there, what kind of fun fantasy world isn't?
I thought that maybe some D&D players could not know about Zendikar (although I doubt that) and others would either don't like it, love it, or maybe right out think it shouldn't be mixed with D&D. So these are the options in the poll!
The "I don't know what Zendikar is" may also be the right answer if you just don't know enough about it to decide if it would make a good D&D world.