If you don’t paint, the wood just turns gray and weathers, you have to know what you prefer. I don’t really like natural weathering because wasps like to swarm on it and eat the wood. Painting itself is only a lot of work the first time, since the back side also has to be painted, and that’s not a smooth surface but full of grooves and cracks. However, the final coat is done very quickly. It takes several hours to dry each time. Overpainting then only takes place on the visible side and is also very quick. The glaze also contains "Schutz" (i.e. biocides) against algae, fungi, and pests, as well as against UV light. So not just paint. You can also get the glaze colorless if you prefer the natural look.