There are a lot of reasons to take photos: fun, art, travel, family, etc. But one of the foundations is making and preserving memories, moments that can't be recreated.
Sophia and Zahid here in a special moment, a milestone on many levels.
Pro tip: When shooting these "event" opportunities, take a ton of shots including the 3 classic cinematic views: wide shot to set the stage, close up and real real close.