Why do you like certain photographs? It’s interesting to think why any picture might interest you, spark a reaction. Having more insight into your own visual “aesthetic” and you do have one, might give you a better compass for finding the right photographer for your wedding. Or it could make your picture taking more fun.
So back to the question, why a particular photo? Subject matter, surprise, unique point-of-view, memories the photograph evokes, there a lots of things. Sometimes, it’s simply the light. The way the light makes it’s own statement on the subject. The way it makes you see something differently than you saw it yesterday, when the light was different.