there are a lot of attractive qualities about aluminum. boLth musically and otherwise. wood absorbs tone, which robs you of certain frequencies, no matter how beautiful/nice/expensive your guitar, bass, or drumset is. have you ever listened to a les paul next to a telecaster? the difference ain't all in the pick-ups, friend. lps are made with a wood that absorbs higher frequency and leaves you with a thicker lower tone. the telecaster is the opposite.
with aluminum (provided that the instrument is entirely aluminum or the neck and pick-ups are isolated from the wooden body, like on a travis bean) all tonal frequencies are represented, warts and all.
this is admirable not only because it provides a wholly unique sound that often gets mistaken for abrasive, but is in fact pure. it also strikes me as more accurate representation of the kind of interactions one should strive to have. presenting everything for the eye and ear appears abrasive at first, though some refer to it as "honesty", and either alienates or at least makes some people wary. but fuck those people.
suck it up. we are adults, and should be able to deal rationally and calmly with such....tonal honesty.