A thought: all of existence can be justified even with one great photo.
Also— an entire trip or experience can be justified for even one great photo. Same goes with [x] amount of money spent on an experience, spent on equipment and gear, travels, etc.
One of my personal favorite photos thus far
For example, my entire week in Cuba can be justified with this one photo I shot and I love:
My modern rendition of the Pieta:
Or even all my experiences with street photography — it was all justified for a few of these great photos I’ve made:
All of my experiences in Vietnam for this photo:
Or all of my random time in Honolulu for this photo:
Taken further — perhaps we can think:
If during your life you have even one great thought or idea — your whole life (and all of existence) was justified!