Because still lifes are in fact “still”, they became photography’s favourite subject back in its earliest days.
Soon after the creation of the first ever photograph in 1826, it was convenient for pioneer photographers to take pictures of something that’s not moving. The reason was simple and technical enough: exposures were fairly long, so an inanimate object was perfect for the occasion.
These works tended to resemble still lifes depicted in paintings, so much they even used the same objects and arrangements. As the photographic camera improved, still life was no longer a necessity, but it nevertheless remained one of the most attempted types of photo-making.