That is simply not true. The IQ of a good JPEG with a nailed exposure and manual WB is just as good as the IQ of a RAW processed image. You shoot weddings - you've got it easy. Yes, I'm very well aware of the pressures of wedding photography, and the photography itself is way down on that list.
You've got all the time in the world (comparatively speaking) to put your subjects where you want them; to get the light right; to take a ton of frames, chimping between shots to check the histogram, to get the shot you want.
Come back to me when you've successfully tried shooting uncooperative, tiny, hyperactive birds that are inviariably in the wrong place for the (routinely crappy) light I deal with in the UK, and get back to me...
Keith, I got to say your stretching to say he's got it easy with weddings... Afterall it's not like he can put studio strobes and softboxes up their at the alter... It's not like he can have assistants with portable lamps running around with him to light custom lighting ratios on the bride and groom while they are dancing... I have shot weddings before, needless to say I dont make my living shooting weddings and if I did, I would have burnt out a long time ago. Heck, with my studio and product photography, you can say that I dont push the cameras limits and have it easy, but then again with everything being so deliberate.... Yes i have 100% control of my lighting, but it's not to say I dont work my butt off to get lighting just right, get the overall scene staged just right and deal with sometimes thousands of dollars in products or budgets, both with sales managers, marketing managers, art directors, CEO's and such breathing down my neck in studio making sure I get the best image for their needs.
Also my other branch of photography, architecture, shooting for companies like wells fargo, they want their pictures like yesterday, and if I cant deliver, they find someone else... It is that cut throat and that quick. I agree RAW gives you more detail, more quality, and gives you the better overall product, but what I am also saying is sometimes, given the situation, time of production, time of post, sometimes you get the luxury to do heavy post and muck around with images, sometimes not. Sometimes you need every ounce of resolution and detail and file, and other time most of all advantage you get will be thrown out once they downres the file, clip out backgrounds, shove it on their websites... Ideally we all should be shooting raw, but sometimes it's just not practical.