First of all, I have many appointments that I need to remember, and I can't keep track of them all in my head. My PDAs have been extremely valuable in organizing my once-disorganized life. I do not have the option of just "living simple and free," and if everyone did that, I don't see how anything would ever get done.
Second, the second poster in this thread has made only one post on these forums, and it is to say how the clicking noise of PDAs is unbearable and will ruin the PDA industry. Um... my troll sense is tingling...