I doubt that evangelical Protestants or conservative Catholics will ever embrace cremation, primarily because Scripture indicates that there will be a resurrection of the dead during the end times. While God will reconstitute the bodies of the dead, the act of burial, as opposed to cremation, is a demonstration of faith in the second coming of Christ and in the creation of a new heaven and a new earth, as the Bible promises. The fact that cremation is increasingly popular in the Northeast and the West Coast, the two most secular regions of the country, is evidence of the rejection of the message of the Gospel, even at death, on the part of many.
The people who will be cremated are less likely to have large families, or indeed any families. There will be few, or any, who will remember them after they die. People with traditional values will continue to have larger families, provided this country does not slip into some type of leftist authoritarian regime and mandate abortions as China does. The meek, that is, those who fear God, may yet inherit the earth as the proud secular humanists leave a minimal genetic imprint on the future.
Once, I would have echoed that statement, but many aging members of my extended family are also choosing to be cremated (in SE Pa.) - and that was a shock to me as they are devout Italian lineage Catholics.
And increasingly, this is not unique, it seems.
My father-in-law and brother-in-law are Southern Baptist pastors. They believe that cremation is fine, as long as the remains are either stored, buried or scattered with respect.