Did you ever buy that toy you wanted as a kid but didn't get?
I myself wanted one of those remote controlled air planes. I thought that's the coolest thing ever. Once I grew up and had the money, I never bought it.
After years of my family saying I'm too difficult to buy gifts for, and me saying, "What the hell are you talking about? Just get me LEGO!", one of my kids got the message and has been getting me LEGO sets for Christmas every year.
It might have started when I bought myself the Cinderella Castle set.
The only problem I have is I'm 53, not 13. Sitting hunched over a pile of LEGO bricks for hours leaves me in pain. I need to come up with a space where I can play without injuring myself.