Quote - Are they worse than ears?  Ears look rather difficult.

 

Ears aren't too bad, at least in theory, and if you have a good modeling app that can use curves to extrude polygons and maintain a history so you can adjust the extrusion after-the-fact and easily bridge between the parts.

Larger, more smoothly-contoured objects are more difficult since you have to maintain a smooth curvature over a larger area. At least IMO, that is.

...