I prefer C# as a language over Java, but I have been unable to find anything similar to the jMonkey Engine for Java. I want the feature of just being able to simply add blocks (called Box in jMonkey Engine) to my world instead of loading models.
Maybe I am just missing something, but I haven't found anything similar in any of the C# things (OGRE, Axiom, XNA).
Although XNA doesn't have built in primitives you can use. The XNA shader series is an example which has a bunch of primitives you could reuse from it.