For example, I originally had an Xbox Live gamertag of "Tigerriot", but ended up completely ditching it well over a year after getting my 360 at launch, just because I had gotten rid of some of my games and hated having them listed on my "games played" list as well as demos that I had never bought. The thought of having 0 out of 200 on my list and having no option to ever get those points drove me crazy. My gamerscore was over 8,000 when I did that too.

Of course you're probably thinking I'm a gamerscore nut, and thats totally not the case. My current score is over 6,000, and I'm not one of those people who goes and rents a game just to get some easy points. But for whatever reason I now have this feeling that if it's on my gamertag list, I must still own it.
Weird?