User blog comment:NecrusIV/Average age of a Space Marine/@comment-4608429-20120815184347/@comment-2253300-20120815211925

Dirge that's nonsense. If a Marine is theoretically immortal then there would be Marines older than Dante. There aren't. Though there are marines that old fighting for Chaos, so you can't simply say that all the loyalists just died in battle. Hate to break it to you, but Marines do have an expiration date.