What does it mean to burn money in photography?

Photographers have equipment and brains. As far as equipment is concerned, the most expensive thing for a good camera is the lens, some of which cost hundreds of thousands, but the body is much cheaper, including others such as level meters and tripods, which are very expensive. As far as knowledge is concerned, learning photography also costs money to buy courses. Based on the above two points, we can know that photography really burns money.