Very well put, and I do agree with you. And if we're talking about Adwords specifically, it also puts you in the good graces of Google (for what it's worth, since many will argue that there is no favoritism there, but I think there is). Furthermore, PPC can help you generate significant traffic at a earlier stage than organic SEO would yield, so that when you do start to employ organic SEO, you've got a solid launchpad, and the traffic you've accumulated will contribute to your natural SERP ranking factors.