Will someone please explain what makes [Aliens want our water](https://worldbuilding.stackexchange.com/questions/18487/aliens-want-our-water) a downvote worthy question? 

It's only been up for about 1 hour, and already received 2 downvotes - While I'm perfectly aware that downvotes are subjective to the downvoter and that they don't have to provide any reason for it, I'd like to know if the question is a bad question in general.

As far as I can tell, the question is on topic and specific enough to be answered. It's also a clear (or if it's not, please tell me how I can make it **more** clear) question, IMO.