I think that identifying and quantifying meaning is important, especially if we are running into various arguments posed by those who are atheists. But--and I think this is a big "but" that a lot of Christian miss--we need to keep in mind that despite however adept we may be at identifying and quantifying meaning within our interlocutions with atheists, we should always keep a "whole person" diagnosis in mind.
For instance, my wife won't go to church anymore. I try to get her to go, and I've tried to do so for years, but no matter how well I try to explain the essence of the Christian faith, she refuses. She'd rather "believe" at home. The reason this all came about is because she was verbally abused by her mother when she was young, and then later, at church, she happened to run into one or two Christians who thought she wasn't "spiritual enough" and got in her face about her apparent lack of "spirituality." Well, needless to say, she thought to herself, "I don't have to put up with this, and I'm not going to....period."
Obviously, you and I can say to her, "Well, we feel bad that you were abused as a child and that some Christians in the church made you feel similar feelings, but the Bible says we shouldn't neglect the gathering of ourselves since it's God's Will for us to do so, and He knows best," or something similar to that.
Now, take the kind of thing that resembles my wife's emotional state, and heighten that to a more massive level, and we can see an atheist emerge if the right 'ideas' are added to the mixture from atheist sources that tell the person something to the effect that, "...you don't have to put up with this any longer."
So, we need to be constantly aware that there is more than just sinful resistance involved with the typical atheist. Sure, some of these folks are just corrupt; but some of them are emotionally struggling individuals who have been damaged by the Church or have experienced deep letdowns in life that play into their un-conversion and holding strongly to atheism.