You see a wonderfully well done photo of say a forest scene and think Oh, I could do that. Then one day your walking along and see such a setting, that forest moment very much like the photo you marveled at. The light is coming in from the side, illuminating portions of moss-covered tree limbs and rocks and you realize, This is it. You carefully adjust your settings, compose your shots, try several different angles, each time looking at the LCD screen on the back of the camera and think, Oh it'll look better when I get home and see it on the computer screen.
Later, at home dejectedly looking at the images on the computer screen thinking...That's it?
Thank goodness pictures are only bits of information on a digital card and not expensive film.