It is great to be able to view your photos on the iPad.  It is easy to scroll through them, organize them in albums and even make slideshows.
Sometimes, the photos we take do not turn out as well as we would like. They are too dark, they have red-eye, they have areas we want to change, or we simply want to add things to them such as text and decorations.  Once we have fixed our photos, we want to share them with others.