I think faith is more about finding meaning than gaining knowledge. In this context, it is no more absurd than any other means of finding meaning.
It is not as if the scientific method points to any sort of objective rationale about where the universe comes from, what kind of purpose it might serve or how one ought to live. Science fails miserably at any attempts to explain any of the more existential questions a person might have. Science can't explain what consciousness is, where it begins or where it ends. Science can't explain why the universe exists, or even that it does exist (it depends on how rigorous you like your proof). Science alone can't tell you how to live beyond the bare essentials. These are all things that theism, or even agnostic spirituality, can provide.
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