I still have the attention span of...Oh, look, a butterfly!!
Hey, I'm the president of the Canadian Association for Adult Attention...Hey, look, what's that shiny thing?
The funny thing about ADD is that sometimes (only rarely) I can actually hyper-focus on one thing to the extent of not noticing what's going on around me. But generally I'm very easily distracted. That's not altogether a negative thing, though, as it also means that I'm very observant of my surroundings. For example, in the last month I've observed sundogs and, 2 nights ago, a ring around the moon, because I'm typically aware of everything going on around me.
I actually thing ADD is just one part of the spectrum of normal human psychologies. One might suppose (assuming they're not a creationist) that there is some evolutionary advantage to the condition, at least in some circumstances - and variation in the genome itself is also now understood to be an evolutionary survival strategy for a species.