In my divinity view, cremation is not the way to heaven. If I quote Jesus”Am the way…….”
Jesus himself was not cremated by close relatives the trending norm crepting at cremation. Rather, His was earth burial not even by close relative,but his one of periphery disciple, Joseph of Arimathea.
So, Joseph bought some linen cloth, took down the body, wrapped it in the linen, and placed it in a tomb cut out of rock. Then he rolled a stone against the entrance of the tomb.
Note rock and stone. And this is science behind it. Nitrogen cycle; natural method of sustainability and self purification. I will only brief two process in nitrogen cycle, nitrification and denitrification to proof my point.
Denitrification occurs in free-living microorganism as well as obligate symbionts of anaerobic ciliates which a coffin provides, but case of Jesus,linen instead of cotton fabric and aided with a mixture myrrh and aloes bought by Nicodemus.
Nitrification is conversion of ammonium to nitrate by soil living bacteria. Because of solubility of nitrates. We public health department don’t recommend cemetery or grave in water-logged site nor upper side of main water sources. Because elevated nitrate in groundwater is a concern for drinking water use for can interfere with blood-oxygen levels in infants and cause methemoglobinemia or blue-baby syndrome. So, that why Jesus was buried in impervious ground-rock.
In brief, if a write a wish to be cremated for environmental reasons, then you will be scientifically wrong. For natures purification is gradual.