Life is meaningless for Christians?

[The Grand Nudger]

I don't see why that would be.  How does it follow, that one would diminish the other?  It seems to me, that it is often non-believers, who say that life has not overarching meaning or purpose.

It's not an issue of diminishment.  If the meaning you find is not found in this life, but in another life, or in some god in heaven and his wish list, then no matter how much meaning you find there, in that..a person who finds their meaning -in this life- finds more meaning -in this life- than you do.  Ultimately you may both have exactly the same amount of meaning (laying aside that it's kind of silly to quantify meaning this way)...but there's a fairly obvious difference as regards the source. 

To a person who doesn't believe in a god or his wish list, that tracks as having no meaning in life..just as, to you, people who don't believe in the heavenly wish list sounds alot like no meaning.

 It seems to me, that it is often non-believers, who say that life has not overarching meaning or purpose.

Has it ever occurred to you that atheists say that explicitly in response to what you insist is the meaning of life, not to whether or not they find meaning in their lives?    

I did see the title, but had seen little in the part labeled transcription that seemed to reflect or expound on that.   Perhaps the transcription left some things out.  But I don't put a lot into short titles.  They don't explain why, or the reasons for that position.  Sometimes they are meant to be provocative and grab your attention; and may not quite accurately reflect the thoughts of the body of text. 

But anyways, I disagree; and I don't think that this type of extreme position is all that common among Christians.

It's fundamental to your theology.  Any divergence from it is a divergence from the word of god. I agree that it probably isn't all that common.  Truth be told, nobody's worse at christianity than christians.