No, I do. Clearing the scrollback because I want a new, very clear start point for a new activity and don't care about the rest is frequently the goal.
If I do care about the history I'll do something else or possibly been saving history to disk, although that's far more rare.
haha, I can relate to that :). formerly I had the compulsion to execute sync frequently. Now my compulsion is to push Ctrl-C like 4 times every time I need it. I read somewhere that's common because of ^C has a lack of feedback to the user, so, a script showing an alert that the clipboard received some information helped with this compulsion.