Good to see you're still visiting this topic premature tyrant. Since this topic was created in 2003.......when I turned 21, I graduated college, got married, moved into own house, created 3 kids, had to get four root canals, beat SOCOM SP campaign on Admiral difficulty, and I'm still posting in this topic.
Back to "daily" comments:
Picking scabs is a primitive reaction to help ease the thought of crusty blood on your skin. It's a primitive defensive mechanism that never evolved itself for the benefit of humans resulting in an underlying sign of OCD and anxiety.