I am an agnostic but, at 61-years old, I can easily understand the concern about immortality. I think that the desire of some live after physical death is more motivating to religious belief than the need for understanding creation or the origins. What can be the sense of "immortality" for an agnostic? For me, it is just the memory we leave. This imposes a strong ethical view on life. I understand that this is not a question, but anyway I would like to know your comment.