My husband has trouble taking what he calls random photos. Hubby needs an event to take a picture and he will press the shutter once and consider the event documented. A single photo of the tree would be Christmas for him. One shot of blowing out candles is enough for a birthday. The few photos he takes are often badly exposed and out of focus.
I love him dearly, but he doesn't think like a photographer. I take more than one photo at events and I take random photos of things happening in our lives. Things like cooking dinner or playing on a laptop. I've got photos of us cleaning carpets.
Taking random photos allows me to practice so that when an event does come along, I won't have bad pictures. If the carpet cleaning photos are overexposed, it really doesn't matter that much. If I miss that photo of him in Disney World dancing with Goofy, I would be quite upset.