3D is a cess pool when it comes to any sort of usability. I mean, if you ask me.

• file format hell.
• progress bars that restart (yes, like Office Space) and so you don't know how long anything will really take.
• uis that don't manipulate 3d objects in good ways e.g. lock the model to not being able to be rotated upside-down, and also not giving me a way to flip the whole model.
• not showing thumbnails of things.
• and a zillion other nicks, cuts, slings, and arrows of ux pooch screwing.