Asking for the meaning of life is a category error. Meanings are properties of symbols - and life, as far as we know, is not a symbol. So asking for its meaning is like asking for the taste of starlight. To vainly chase the sun's flavor is to ignore the majesty of its radiance.
I don't see how it's useless. There's a big difference between your or my meaning of life and *the* meaning of life. The former can be whatever we want it to be; the latter is the immutable, transcendent meaning we all yearn for when we ask, "what is the meaning of life?"