I like that.
And that’s basically what I want. I wrote it specifically in my “durable power of attorney” that no “extreme measures” be used, and any/all useful organs be donated. Then cremation, then ashes scattered over the Smokies (ancestral home).
Cremation.
The wife knows, and I must say…she is morbidly looking forward to putting a little Hawaiian shirt on my urn. 
Then when she joins me in the Choir Invisible, our ashes are to be scattered under an olive tree. Like kelly5078, I find modern burial procedures revolting. Anaerobic bacteria and I have never gotten along very well anyway…
I have always said cremation. But this new technology of making bodies into diamonds sounds interesting.
Donation - Cremation. There’s not much space for burials here.
I wanted people at a hospital, or laboratory, just pick whatever they need out of my body and then throw the rest of me out with the garbage. But apparently they don’t do that. So: a minimal cremation. If you wanna mourn over me, do it at home. No false sentiments please. 
If I could be buried in a pine box with no embalming and no airtight vault, I would go that way. Give the worms something to do.
Since in the USA that isn’t really an option any more, I’ll go with cremation (please, DON’T pay to have a coffin cremated with me).
Cremation, then have my ashes built into fireworks, which will be shot off at some party in my honour.
(BTW I also (if I ever get a lot of $$) having a fake funeral/wake so taht I can hear the eulogy, and see what nice things people say about me, of course people who say bad things about me will get bad things from my will. For his own use eternally, I leave my shower chair to …)
I am really kind of surprised at the overwhelming selection of cremation, although I think it is better for a lot of reason.
I read where the turning ashes into a diamond is a scam, and not only that, they only use something like 2 ounces of your ashes to make the diamond, if they actually use it at all.
So far, I am most impressed with DeVena’s answer: Re-Use, Reduce, Recycle.
Practical, morally correct and just good sense.
No one has mentioned religious reasons for NOT being cremated…aren’t there some religions where that is forbidden, or am I mistaken?
Exactly. That’s why I want cremation. I don’t even want a viewing, because that would involve embalming, which I also find distasteful. No, thanks. Immediate cremation in a cardboard box, and the ashes scattered.
“Accelerated decomposition,” then put what’s left—at least what’s fine enough—into egg timers. At least then I’ll finally be doing something useful[SUP]*[/SUP].
[SUP]*[/SUP]No, that’s not original to me: It’s been attributed to Anthony Hopkins, as well as to another British man whose name I can’t remember. But I like it.
I prefer whatever is the cheapest method my next-of-kin can find. I would guess that donating my body to science would be free, yes?
I don’t care what they do with me, but if anyone brings a member of the clergy within a hundred miles of me, I’ll haunt 'em for eternity.
Cremation. I’ve always found caskets to be such a waste of money. Pay thousands of dollars for a pretty box the family is going to view for a few hours and then shove into the ground for years and years. The deceased doesn’t care.
I’m not sure what I want done with my ashes, though. Probably bury the ashes and plant a tree over it, like Kalhoun. And maybe a small, cheap, marker with my name, birthdate and deathdate on it.
I’ve always had the fantasy of someone sneaking my ashes into the Mausoleum of Augustus in Rome. I’m not sure if tourists are allowed into the actual Mausoleum, so it probably could never happen anyway.
Cremation, then toss me over the Horseshoe Falls at Niagara, which is where we scattered my mother’s ashes. Yeah, it’s illegal, but if you do it at night when everyone’s distracted by the lights on the American Falls then no one will even notice.
I’d like to be flash frozen then stuck in a glacier somewhere with a lot of cultural artifacts so that scientists in the distant future can learn about people from our time. Probably won’t happen though.
Cremation. Burial takes up so much in the way of resources, money not being the least of them.
My first wife had both. First cremation and a funeral ceramony. Then I took her remains to Pa. were her family is from for another funeral ceramony and burial in the church cemetary next to her mother. The double funeral was almost too much for me to handle. But it was a hell of a lot cheaper than shipping a casket.
Harvest anything useful, burn the rest, ashes to the Gulf of Mexico or down the toilet, whichever is easier.
Cremation, after organ harvesting.