What Draws You to a Photo?

These are photographs I took of my Dad and my Nephew. All black and white film. The first one I printed in the darkroom was the one of Johann's hands on my dad's face. I looked down at the photo and thought "these pictures are important". It felt good. Soon I started questioning the validity of that thought. Are these photos important because they're great photos of a grandpa and grandson? Or are they important because they're of my family. My fault as a photographer may be differentiating between photos of people I love and photos I love.