The Rolex Deepsea can be taken down to a depth of 3,900 meters (12,800 feet) - meaning its water proofing is far, far in excess of what I and almost everyone else would ever require. But it is nice to own a beast like this Steel, with ceramic bezel, 44mm ...
I do however use the stopwatch function on my boat and jet skis all the time. I guess the 9300 movement with column wheel requires that excess thickness.
How many Ferrari owners have red lined their car?? People, especially men, like buying products that have excessive engineering prowess. I see nothing wrong with buying a luxury product with performance characteristics that won’t be used.