I have hesitations, but I’m not sure they’re valid. It certainly has nothing to do with the ultimate state of the body in the resurrection, since buried bodies decay after death, and God can recover atoms spread throughout the cosmos if that’s what he wants to do. But since it’s a choice someone makes about the use of their body after they no longer are in it, and since others may benefit from that, a case can be made for it. But because of my uncertainty I personally wouldn’t do it. But I may be off on that.