Definitely a rhetorical question, one that I'm sure we could all answer to fit our own reasons for asking it.
As far as choosing to drink... that woulda been nice to have the power of choice over my drinking. Once I crossed that magical line, that power of choice was gone. I wish I could have chosen to drink too much, or chosen to drink too often, and especially wish I could have chosen to not drink. For me, I have proven to myself, repeatedly, that choice as an alcoholic plays no part. Even today I wouldn't say that I "chose" not to drink today, its not a choice. For me it has been a spiritual experience that has removed that drive to drink from me.
So, was I born an alcoholic.... I don't really know. I certainly did things "alcoholically" as a child, but I was not a daily drinker from the get go. However at some point along the way I lost the power of to control or make and choices regarding my drinking.