Balloons

I often wonder why I'm fascinated by certain things; why certain forms, structures inhabit my thoughts for months, years. Take balloons for example, I've made over a dozen posts in half as many months, motivated by their plump presence.

Is it because they're empty?
Is it because they're hollow?
Is it because they're full?
Is it because they're contents are invisible?
Is it because they float?
Is it because they float away?
Is it because they come clustered?
Is it because they're essentially shells?
Is it because they gain life from human breath?
Is it because they don't gain freedom until untethered?
Is it because they're only controllable when tethered?
Is it because they're lighter than air?
Is it because they create the illusion of volume?
Is it because they're subject to the whims of the wind?
Is it because they're a nearly pure form?
Is it because they're taken for granted?
Is it because they catch light like gems or stained glass?
Is it because they have a finite life-span?
Is it because they die?
Is it because they seem anxious to be lost?
Is it because they're born to collapse?
Is it because they pop, loudly?
Is it because they become invisible as they rise?
Is it because they're purchased for potential rather than value?
Is it because they're containers?
Is it because they're colors denote occasion?
Is it because they're colors connote emotion?
Is it because they can be killed with a touch?
Is it because they get caught?
Is it because they fascinated Warhol as well?
Is it because they're multiples, part of an infinite edition?
Is it because they model larger systems?
Is it because they're disposable?
Is it because they're a true commodity?
Is it because they're available to nearly everyone, nearly everywhere?
Is it because they're proxies for lungs?
Is it because they're mass-produced orbs?
Is it because they're only content is spirit?