Frank, my belated condolences.
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This is understandably a topic in which there is no clear cut answer.
Different cultures are different, and times change as well.
It was once very popular in the US and Britain (Victorian age) to have a post-mortem picture taken, especially of deceased children. I once when to an exhibition with a huge collection of photos of people, mostly in caskets, or lying in state.
Personally, I agree with those above who take the attitude that death is part of life, and so is a legitimate subject (as long as the people close to the deceased consent). The tendency in some societies/cultures to hide death, is, I think, not a psychologically healthy tendency.
I come from a Jewish family, and here I think the traditional Jewish culture is extreme: the dead MUST be buried within a day of death (unless the burial falls on a Saturday, in which it can be deferred to Saturday night or Sunday).
My father died of cancer in hospital in NYC when I was 14 years old. I used to visit him a couple of times a week (the hospital was not local to our home), but I never said goodbye to him, and when he died, I never got to see him again because he was wisked away - next day we were putting a wooden box in the ground. I can really understand cultures which display the deceased for a couple of days prior to burial - you have a chance to say farewell, and this is bound to be healthy.
Anyway, my mother is quite old now and lives thoudands of miles away from me - I fear that if she dies suddenly, she'll be buried before I even get to town. Then I'll appreciate it if someone takes some photos of the funeral.