Yes, I entirely agree with doing this, especially if you get requirements while you're working. In college, I was working on a site that I received piecewise re

Yes, I entirely agree with doing this, especially if you get requirements while you're working. In college, I was working on a site that I received piecewise requirements, and one requirement would cause me to rewrite one module that would cause conflicts with others. Once I was satisfied that I had all of the requirements, I simply rewrote everything almost entirely from scratch. So yes, its best to try to write it correctly the first time, but its ok to rewrite it a second. After that, you should probably look as to what you're doing wrong.