I spoke with a local "photographer" who worked this way. She would take as many as 500 frames in a day (of nature scenes) with her DSLR.

Then she would select 2 to 5 "good" frames. The trouble was, even the "good" frames were terrible, because she didn't know what a good photograph was.

As others have pointed out, there are situations when exposing as many frames as possible is the only way to work.