I am a moderate user of wings3D. That is, I have been using it for 5 or 6 years now, I use it exclusively for drawing technical models, and I use it only when I need it, no research or experiments for fun. About the technical subjects: mostly I create drawings which should give the user an idea how something looks or is assembled. Dimensional accuracy is not the most important as long as the ratios look more or less right. Rendering is something I never do, and I am happy when I can color objects and get the lights and shades right using the "quick preview". Here an example of what I mostly do:
The cons of using wings3D that I feel is that sometimes it is tedious to create complicated shapes, like bended pipes. This requires a lot of manual calculation of 3D angles, extrusion, loop cutting, rotation about a point, etc, etc. Tasks are often repetitive as well. The user...