6MP is perfectly adequate for what most of the public want from their cameras. My D50 was excellent. My D90 is also excellent, but the doubling of the pixel count is far outweighed by other improvements. My Panasonic Lumix DMC-FX35 is an amazing camera, but it is 10MP. Unnecessarily noisy in low light, although it does actually take pics in low light and you can turn the flash off - two essentials for a camera for me.
Sadly everyone that looks at my cameras says "How many pixels?" rather than how good is the lens, how good in low light, or is there a shutter delay, or how long does the battery last, or can you actually see the info stuff on the screen etc.