Why does no one seem to care that the bottom 15 degrees is missing from virtually every projection? If it's just because it's un-inhabited why not cut off the top 15 degrees as well?
Well, technically the bottom 15 degrees aren't either. What are the other reasons? Because you don't need to navigate around it to get somewhere else? If you're just going to omit parts of the globe because they're empty, why bother mapping seas or the Sahara Desert?