> what actually makes you sad is the hands-off approach we take to funerals in general
That is a component, not the root.
> done in the traditional way—on a funeral pyre lit by the grieving loved ones who watch as the body is consumed?
Yes, that would be better. I still don't like cremation, but that is also a true sense of finality and closure. Would stink to high heaven, though.
> For myself, I'm all for cremation, and I say that as a devout Christian. When I'm dead I don't want my family to make a big deal out of my mortal remains. That's not me, it's a shell that I left behind on my way home. Cremation emphasizes that I've moved on in a way that for me burial just doesn't.
I am as well, but most traditional Christians do not believe in Ghost in the Shell. The body is an essential part of our being, and does not lose that aspect of our being after death. Cremation was previously only practiced by cultures that believed in a split reality—for example, the Norse pagans and Valhalla.
As Christians, we all believe in the bodily general resurrection and heaven being in "the same place" as we are now (assuming all Christians believe in one of the two forms of the Nicene creed).
Working from there, burial seems more appropriate.