That's one of the many delights of digital, the freedom to shoot without incurring immediate cost, not to mention the wait to see results.
Great example: I had some cabinetry installed in my office. Weeks later one of the bits of hardware for a drawer broke. I was having a hard time over the phone getting the installer to understand exactly what was wrong.
So I just took a quick snap of it & emailed it to him. At least he understood what part I meant, even if he STILL hasn't replaced it.