Should, Would, Could (Not)

Is there anything that:

1) should not be photographed?
2) cannot be photographed?
3) I do not want to photograph?

I think that:

1) there probably are things that should not be photographed, in the context that people would not want to see them. But, sometimes I feel like we do need to see these things - the poverty, the sadness, the broken roads. "We need to just stand in it." - John Green

2) that there is not anything that cannot be photographed. There are things that don't physically exist, like love for instance, but we can look at a couple who is truly happy together and see love through them.

3) I would not want to photograph at a funeral.