Is there ever a need to use both ray tracing and rasterization in the pipeline together or is it simply best to stick with one and go with it? A good example can go well if you can find one.
This paper talks about a method of combining ray tracing and rasterization, and it comes with some good example images: https://pdfs.semanticscholar.org/008d/6628e0787a95b802dae28546593078d4ab7a.pdf
That said, I don't know how much this is done in practice.
Besides being simpler and probably quicker, is there any other benefit of rasterization over ray tracing? Is there ever a situation where rasteriation will actually produce something that ray tracing cannot?
I don't think that there would be a rasterization that would give you information that ray tracing could not as we could rewrite the raytracing algorithm to effectively mirror rasterization if we removed bouncing rays and other such techniques.