did you know that laughing in the face of nervousness is a veritably healthy and common behavioral response upon stressful situations?
the more you know. :)
Really, not sure that is knowledge, supposition at best and sure it maybe something applicable and utilised by some.
Not something I can ever recall doing, though may have observed once or twice and can't recall it helping much for those that did go down that path.
Perhaps you are hinting at the ideology that religion at the very least provides false hope for many, makes their existence somewhat more more tolerable whilst fostering a
spirit of giving, caring and community.
Giving, caring and community are ideal, though when tainted by religious beliefs it leads to the exclusion of all such ideals.