Terrible rewrite compulsion

I just opened a project that I hadn't touched in quite some time and noticed that I was building up my SQL statements by concatenation, which as we all know is a bad idea.  I then felt that old compulsion to start rewriting -- this time to use OleDbParameters.  I really don't need to update the code.  It's a personal tool, and it serves its purpose, but the urge to rewrite is there.  Next time I open it, I may have learned another new trick and feel that urge to implement that.  Anybody else have this kind of compulsion?  I'm sick.