I work with large (ship) diesels, so I'm okay with the whole smell and light clatter thing. (You should hear a V-16 turbo with 1040 cubic inches per cylinder!) We just don't have any good choices. I don't need the rest of a 3/4 ton pickup truck (tires, taxes, parking, etc.) badly enough to get a diesel truck. The VW is nice until you have to change the timing belt for $500+. Mercedes cost big bucks and you need to pee in them (add urea) every oil change. Finally, our refineries are biased to make gasoline, so we get less diesel and it costs more. (European refinery designs are biased towards fuel oil.) Still, a good practical 2 liter diesel with timing gears or chains that didn't need emissions fluid would be a nice alternative.
Growing old is unavoidable. Growing up is optional.