Lol, it's not - but that is awesome. Space Marines are typical of what you see in syfi stories. @Sydanyo hit the nail on the head, as did many others. His post, btw, isn't irrelevant - it's just what you were discussing.
- - - Updated - - -
Very solid point - we won't be anywhere near the point of planetfall or full on ships for probably a 100 years - at least in the way I was thinking. Obviously we'll have ships before then.