I was diagnosed with ADD, inattentive, as well and did the adderall thing as well and it made me such a boring person. All I wanted to do was organize. It's like all I was anymore was Te. Dull dull dull. Not to mention my face would become bright red as the medication wore off and I couldn't sleep. Also, you feel kick-ass awesome when it starts to take effect and then it kind of goes down hill. Then there's the fact that you get used to the dose pretty quickly and it stops working so you want to raise it, etc. Next thing you know, you're feeling you're totally dependent on a drug, and it doesn't feel like a prescription thing, more like cocaine. Although maybe for people with full-on ADD it's different. But it did make me feel calmer when it kicked in; it's just when it wore off I was the snappiest bitch ever.
How I am being part of the ISFP (or SP.. or P) personality makes a lot more sense to me.
I have friends who teach kids with behavioral problems, many who have ADD, and they say you can totally tell the difference between the kids who really have ADD and those who supposedly do. They say it's night and day, that the kids with full-blown ADD can have a coffee and they are instantly... chill, and otherwise, they are completely unmanageable.
That's what makes me think inattentive type ADD is just a personality thing, not a disorder. Because yeah, I can focus on what I'm interested in, I just don't like to pay attention to stuff that I think is worthless or stupid. (Not exclusively a guy thing. I am well-known for my selective hearing. It drives my husband nuts.)