And it’s interesting, because Tolkien really didn’t have that many deaths in his books, and yet he said himself that Death was the principle theme in The Lord of the Rings. Meanwhile, The Song of Ice and Fire series isn’t really about death, as much as I think GRRM would like it to be. The constant character deaths simply make you numb to it. The theme seems to be “everybody dies, so just ignore it and carry on”. Yet Frodo passing into the West, not even an actual death, does infinitely more to make the reader ponder the nature of death. And that is simply one example of the many types of “deaths” you see in Tolkien’s works.
Basically, the “lack” of death in LotR isn’t a weakness, as some have claimed. Rather, it is simply a more thoughtful, more artistic treatment of the subject.