Why do you think there are still so many people using a Sky3DS without downgrading ? Because they have no idea how better the alternatives are, that's all. They think they have tons of disadvantages even though nope.
Then of course, I understand someone can use a Sky in combination with a9lh (for easy testing and whatever) or someone may like better the drag-and-drop-with-no-hacks aspect, but really, most of them are just people who have no idea what they're doing and what they could do. Just search for "Sky3DS" topics in the search bar and you'll see how many of them learn stuff that everyone thought obvious for everyone.