Because that's the only reason I could see him wanting to ruin the reputation of Clerks, clearly his best work, by coming out with a sequel. For those who weren't aware, the original Clerks was supposed to end with Dante getting shot during a robbery of the store in which he worked. What a fitting ending to a great film that would have been. During a particularly bad day, following hours of muttering "I'm not even supposed to BE here today," the antihero is mugged and shot, and the movie ends. That would have closed off opportunities for a sequel, however. The only "semi-sequel" I've watched in Smith's portfolio is "Mallrats." Having seen that film, I decided it would be best to simply avoid his work, for while it was not a terrible film I could see the direction in which Smith was heading. It also turns out the director of "Jay and Silent Bob 1, 2, 3, 4..." as I've taken to calling his post-Clerks work, does not take kindly to criticism. Personally, I was surprised to find out that he was so petty... not so surprised to find out he so lacks confidence as to pepper his tirade with 4 letter words.