Not to worry, we all feel the same way sometimes. Just remember
that "quantity does not equal quality", and be glad that you
didn't need to spend hours in front of a computer to generate an
image.  FWIW, there isn't anything wrong shooting in program
mode, you just have to learn when to ignore the meter. I almost
always shoot my F5 in aperture priority mode. I don't bracket,
and I always shoot transparencies.