So you just bought that new camera and you're so excited to test it out. So you tell your friends to go hang out with you at the mall, and you proceed to take a few pictures as you run around without a care in the world. By the end of the day, your memory card is full and you're hyped up to see your pictures. You plug the USB cord in the computer, and look at your pictures. A small tear flows out of your eyes as you see consistently under-exposed and mysteriously colored pictures. Obviously, you bought the wrong camera right?
For the most part, the end result of a picture is more determined by the photographer, not the camera. You can blame that camera for being bad all you want, but at the end of the day, it's your fault.
Then again, it might be time for a replacement.