What led me to choose Drupal as a website platform? To answer that, I first need to explain what led me to choose a Content Management System (CMS) in the first place.
I've been creating and maintaining web sites since 1995. Some good, some bad, some in between. Most of this was monolithic design with static HTML, using everything from notepad and joe (I never really went for vi, though I can use it in a pinch) to FrontPage (yeeccch!) and DreamWeaver. I've written vbscript in asp, hacked together some perl (with and without the CGI module), and even dabbled very cautiously into the realm of php.
Any of those would work for me as long as nobody else was trying to publish, and/or I wanted to do everything by hand. Pretty soon, it's time to move past brochureware and static pages and start creating dynamic sites. After all, this is web two-point-oh, right?