Is Ambiguity nice?

I have gone through quite a few blogs and one thing I notice amongst many of them is that people love to post ideas in an ambiguous and an unclear manner. There have been many occasions when I have totally been unable to comprehend what the post is about and what the person is intending to tell. Is ambiguity so beautiful? Does ambiguity imply maturity and being highly intellectual? Does simplicity mean childishness?

Personally, I feel any idea which you like to convey should be conveyed in a manner such that even a child should be able to understand. This means that you convey your idea in a coherent and in the simplest possible way. Isn't a simple post nice to read and understand?