Under your definition, calach, I am "from" Cleveland. My father was in graduate school there, in temporary housing. I lived there for 1 year. My dad had a condition for which he sought the "geographical cure" also known as the "grass is greener" effect. We moved a LOT. I am now living in the one state that has ever felt like home, even though I first lived here after I turned 16. So I say I am "from" New Hampshire. But this rootlessness has led me to yearn for my deeper roots, my ancestral roots, which are Ireland (co. Westmeath), England (Framlingham, Suffolk), and Scotland(place unknown). Never been to Westmeath or Framlingham, though I might someday. They probably won't feel like home, either. But it's nice to know where the old folks came from.
Lots of North Americans suffer from this rootlessness. Don't fault us for looking to the past for the place where the deep waters nourish the roots.