Excerpt from this article:
One of the major reasons we take photos in the first place is to remember a moment long after it has passed: the birth of a baby, a reunion, a pristine lake. In 2015, I conducted a Bored and Brilliant Project — in which I challenged people to detach from their devices in order to jump-start their creativity — with more than 20,000 listeners of Note to Self (the podcast about technology that I host). When I surveyed the participants, many said they used photos as a “memory aid,” taking pictures of things like parking spots or the label of the hot sauce at a restaurant to buy later. However, every time we snap a quick pic of something, we could in fact be harming our memory of it.
In one study, students were told to take photos of objects at a museum — and they remembered fewer of the overall objects they had photographed.