I think a funeral is sometimes required so that people can accept the idea that someone is really, truly dead. Going through the ritual can be helpful for this. I used to think open casket funerals were ghoulish–and I still hate the embalming, makeup, etc. that makes them look like plastic dolls–but seeing the dead body can also be important for getting the idea that “Person X is dead” into your mind.
My younger sister died last year at age 27. There was no cause of death found. One second she was alive, watching TV with her fiance. The next minute, dead. Only her fiance and one of my sisters actually saw her body; then she was cremated. I now feel that was a huge mistake. Because my sister was never sick, and no reason for the death was found, it has left the rest of us feeling like the whole thing–even the funeral–was unreal. She was so young and healthy, energetic and fit. She was in perfect shape, always had enough energy for three people, and was a straight arrow as far as lifestyle went.
Every time she does not show up to a family event, it is still kind of a surprise. Since she was deployed with the Navy for awhile not long before her death, it is easy for the mind to put her into the “absent but still alive” category. She doesn’t seem to fit into the “dead” category. Nothing we ever saw of her would go along with putting her there. The funeral was the closest I got to making it feel real, but in the end, it is just a name on a plaque.
It’s not just me, either. My youngest sister, my mother, my dead sister’s best friend…we all walk around with the vague sense that someday she’s going to turn up. Logically, we know she’s dead. But at the same time, it is not logical that she’s dead.
I’m pretty sure a traditional open casket funeral would have made me vomit (literally), but I know for a fact it would have helped me to accept the whole nonsensical situation. So yeah. I think for many people, seeing the dead body at a funeral helps them accept the facts.
“Closure,” though, I think is a bullshit word.