[lkchris]

Forums like this exist for a large part to help correct mistakes made by DIY guys.

With a dealer oil change, the service is done by a professional with eyes for details and potential problems and the experience to direct what to look for. You'll get a better quality filter than you can get at PepBoys, too.

You also avoid the danger of crawling under your car while it's up on jackstands.

If you're truly good at this stuff go right ahead, but there is ZERO reason to badmouth dealers. In the long run, you can't operate any car without one and to think otherwise is delusional.