If you're not in school or learning new things, you're not exercising your brain as much as you did. Also, there's more stuff going on in adulthood. Right now, at this very moment, I have 9 separate, very complex and time sensitive things I'm working on for work. Each of those 9 cases has anywhere from 5-10+ different time sensitive things going on that I have to keep up with. I have to remember which ones belong to which clients, who the people are on the other side of the deal, who the lawyers are, the banks are, the inspectors, the utility companies, whether there's a termite contract and if so who is it with, who did I schedule closing with, and when, and what time, and a million other details. The buyer didn't want to close on a Tuesday, and she told me this when we first contracted-- don't set closing for a Tuesday no matter what. So I set it for a Friday, and the seller said he had to close that Tuesday, and I set it for a damn Tuesday, and then she told me again, no fucking Tuesdays, so then I had to call the attorney and the bank and the other agent back and HOLY FUCKING SHIT! I also have a kid at a summer camp who has to be picked up at 3:30, and he's in trouble for smarting off to a teacher yesterday, so I have to remember that his video game time has been taken. I have another child at a daycare who has to be picked up at 5:00. At some point I have to go back to my office to get my calendar book but I have to call a client before then to find out if he can bring me a check and...oh and I'm going through a divorce, so I'm waiting on a call any minute now from my attorney to tell me how poor I'm going to be when this is said and done. I'm also selling my house. So. Yeah. I'd say my inattentive symptoms have a lot more opportunity to come up now than they did when I was 10 and my biggest problem was that math was hard and history was boring and recess was too far away.