That depends. I don't have kids, so I can't speak to that, but I do have dogs, and they're not going to be with me forever, so I am more likely to keep some sub-optimal shots.
When you have small kids or pets, you often have to "spray and pray" to get a sharp shot. I know some people keep the entire burst set of shots - their prerogative. I don't, I take the best shot or two. But sometimes that "best" shot still didn't come out great, whether it be because of thin DOF (often from being forced to shoot wide open in bad light), motion blur, or a slightly missed focus.
When you have small kids or pets, you often have to "spray and pray" to get a sharp shot. I know some people keep the entire burst set of shots - their prerogative. I don't, I take the best shot or two. But sometimes that "best" shot still didn't come out great, whether it be because of thin DOF (often from being forced to shoot wide open in bad light), motion blur, or a slightly missed focus.