I am a terrible photographer, but here's what GG can look like after a little polish and sealant. Notice the reflection of the tree branch in the wing pillar, as an example. YMMV
To answer your question, you don't
have to protect the paint. There are show cars, that rarely see an open road, with finely polished paint and layers of glaze to bring out the gloss, depth and reflection. No matter where the car is kept, the paint oxidizes over time. Regular washing and drying, too, causes micro-marring that can be diminished by having a slick (paint) surface. There's no law that say you have to wax your car. If you want your car to look its best, you may want to look into the process before buying a random can of wax and smearing it on the paint. The technique is even more important.