Originally Posted by
ricktas
Beginners SHOULD KEEP more photos. When you look at a photo that you do not want to keep. Ask yourself WHY? What is wrong with it, and why is it wrong. Perhaps it is blurry... the answer could be camera movement (get a tripod), to slow shutter speed (use a faster shutter speed). As a beginner you learn a lot from what went wrong when you pushed the shutter. So do not just delete them, but use them as a learning exercise. Understand why the photo turned out such that you want to delete it, and you won't (hopefully) make that mistake next time you shoot something similar.
So if you are deleting then as your import them into Lightroom, chances are you are missing a great opportunity to study them and learn from your mistakes.
As you learn more, and move towards being an intermediate level photographer, your skill increases should see you using the delete option less and less. I will often go out for a sunrise/sunset shoot and come home having taken between 20-30 photos over a period of a couple of hours.. and not need to delete a single one of them.
LEARN FROM YOUR MISTAKES..don't just delete them.