I suffer from this when taking photographs of my daughter. I suppose every parent does. And the end result IS that I end up with a pile of photos I'll never look at again.

"I should delete 99% of these photos I took from her birthday. But she looks so cute in this one! Oh, and this one! Which is a minor variation of the other one. But I could never delete it."

I'm much more inclined to delete redundant photos of nature, landscapes, etc, but then again -- since they are static -- I also tend to take fewer of those to begin with!