>Doesn't prove it, but then... it can be read as "if your life is meaningless, try religion".
No, it doesn't really prove much.
Religion has, indeed, been a source of support for many people.
It has also been an excuse for the worst in human nature.
One way or the other, 'tis not really a proof.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)