How much of a good thing is too much?

I read this article about photography and I found it fascinating. I happen to agree with the writer - my ideal photographer is one that can get all the posed portrait shots in one location in 5-10 minutes, from all angles with all possible lighting. I don't want 500 images to sort through that all look almost exactly the same. I'm not saying I don't want a lot of pictures, but I want a lot of different pictures. I would also rather have more different pictures than more of the same. But the point that rang the most true for me is this, "For me, the big deal is that some are going out there and not putting much time or thought into capturing the essence of a scene. They just lift the camera, point in the general direction of what they want and just fire away. I’ve actually heard the term “spray and pray” used for such shooters. The idea of slowing down and taking your time to both enjoy the moment and to really take into consideration all the nuances of things like lighting, shadows, and minimizing distractions has benefits."
I also loved this point, about giving fewer images to the client, "It makes the choices easier for the client. In a world where time is an increasingly valuable commodity, getting bogged down in sorting through hundreds of images trying to find one or two to print and hang can be more frustrating and lead to inaction."

Do you subscribe to a less-is-more school of thought or do you want as many pictures as possible?