Personally, I enjoy doing cell shaded work mostly because it doesn't take as long to do and can still produce a clean, crisp image that is easy to identify. Since I also do a lot of graphic novels, cell shading works the best for this, especially when transferring from online reading to a physical book. I do like realistic stuff, don't get me wrong, but for some things, it's not really necessary.
I practice my realism of course, but it can be time consuming and requires a lot of detail. These days, time is a luxury for me so I have to spend it wisely and thus, cell shading means I can get more done and still have some time left to do more or even just relax for the rest of the time.