Not being able to hold onto a thought for more than 3 minutes, or having to deal with potentially being distracted by every little thing that happens around me does not feel like the normal state of affairs. Trivial tasks can take me hours instead of minutes in some situations.
Unfortunately I'm currently in a country that doesn't allow me to get medication for this (and previously I was in a country that believes that ADD/ADHD magically disappears when you turn 18), but I still have good memories of how much it helped me get through middle school and high school (I went from almost never finishing my math homework to being able to finish everything in class in only half the allotted time).