Advertising photography has many aspects, above all the transmission of all the characteristics (and more!) of the product you are looking at / shooting / representing, and then the preparation of it, the love that has to be conveyed through your image. Details, sensations.
Most exciting of all, is the challenge of the impossible task: the egg that breaks, the trays which float in the air, new worlds out of ugly parts.
All pre-Photoshop era work, when problem solving was paramount.
Anyway, my acquired skills to achieve solutions are now recycled on other issues.