Its relatively easy to express one's love directly to a child. But to a father, who devoted 20 or 30 years to raising you, for most people (not just photographers), aren't feelings much more complex?
對孩子表達愛意直接容易，對撫育自己少說二、三十年的父親，不只是攝影家，大部份人的情緒都會比較複雜吧？