Are you very concerned what happens to your body after death?
Well I won't have the slightest concern after my death, that's certain. It does not much concern me now, either. I'd like to have my organs donated but after my experience with my son's wishes in this regard being thwarted by technicalities after his death, I don't have much in the way of expectations there, either.
No. By then its too late. I want what is called a green burial. That means that the body is wrapped in a cloth (canvas) shroud and buried fairly shallowly. This allows the body to be reclaimed by bacteria, insects, and other natural organisms. Several states allow in select cemetaries.
Of course... Since I am the only one that Rented it in this life... I don't want it to be consumed by chihuahuas or urban cannibals. Only property I ever acknowledged... When I die... My body belongs to My Mistress... The Sea.
I think they say every seven years each cell in our bodies are replaced. If so, our several earlier bodies are already strewn, bit by bit, down the trails we have walked. I don't there's anything special about what turns out to be our final body (except that parts of it may be donated).
I want to be cremated and tossed out on a windy day facing the wind
Not at all, I will be done with it. If I truly had a choice, I would want to have my body left in the desert for the coyotes and vultures to feed on. The legal options all seem wasteful to me.
Nope. Take anything that might be useful (though at my age and health status that might not be anything) and burn the rest. Do whatever you want with the ashes, I'll be gone and won't care a bit.