[QuarterMileSidewalk]

I've generally had the opinion that if spires are counted, then antennae ought to count as well, since they serve an important functional purpose, unlike most spires. That said, I personally am more impressed by the physical size of a building with a high, flat roof, than one that tapers to a point, although spires can certainly be the more aesthetically pleasing. I think that International Commerce Centre and Shanghai WFC are waaaaay more impressive than Taipei 101. But tha's just me.

Perhaps flat-roofed buildings and spired/antenna-topped buildings should just be subcategories of skyscraper, and measured separately, much as supertall radio masts, observation/communication towers, and fully occupiable buildings are subcategories of all man-made structures, and measured separately.