Maybe they use the why question and sit there for months just to avoid having to do the how question.
Hmmm. "Why" questions are usually considered to be philosophical, or religious, questions. Metaphysics, IMO, still avoids such discourse, but I could be wrong.
Besides the singularity example by CAT, another example might be the Multiverse idea. Overlaying String Theory within the framework of quantum mechanics produces, apparently, some interesting results, which I think would be considered metaphysical.
Metaphysics, since it includes the word physics in its name, sounds better than "pseudoscience", but I would bet that the distinction can be found in the level of mathematics that can be applied.
If we look back a few centuries, perhaps the models that did incorporate the "why" viewpoint could be deemed metaphysical from today's point of view.
Ptolemy's orbit for Venus, for instance, might be one example of this in his huge math model. They asked him why he placed Venus between the Sun and the Earth, since his model would also work with Venus outside the orbit of the Sun. He said something like, "Why would God waste all that space?".
