"Street photography" or "social photography" shares some elements with nature photography. First off, the photographer has to be at the right place at the right time when something or someone appears that is interesting and or doing something interesting. Sometimes that requires serendipity. Serendipity favors those that are prepared. That allows one to get lucky more often that the average person. The final thing is that most of the time the photographer has to be ready to take the picture when the opportunity arises. These opportunities may be very fleeting and composition has to have been thought out in advance before the "event" occurs.
That my friends is why many photographs aren't "snap shots." Even if the perfect vantage point wasn't used or the perfect shutter/aperture combination on the perfect medium at the time when the image was captured.
George S. Patton once said that a good plan applied efficiently and enthusiastically NOW, is better than the perfect plan applied too late.
That's why when self proclaimed experts make fun of some shots, I just laugh AT them.
When I was working for one of the University of California campuses, I had shot a behavior video of an infamous insect, the professionals were putting together a training video and they intended to re-shot every thing as is typical with UC and their IPM photo collection. However, they had to use the video I took because they couldn't get the "Professional" shot.
Sure, they could have done it better because they had 10x better equipment and more gear. The moral of the storey, sometimes it isn't all of the so called pizazz, but what the image IS.