Ok, if we look at it at a purely theological level then we can see some answers. Angels in hevan are supposed to be without sin - so no lust, envy, hatred, desire etc etc, in other words theyre totally flat and empty beings, how anyone can be happy without any form of envy, passion and desire is beyond me, but anyway the bible says its paradise without any good reason so lets take it as gold
If an angel is technically a dead human, then human limitations do not apply, so things like food etc would not matter - Angels are supposed to revel in God's love and have no other need, as need would lead to desire and thats a no-no
So in answer to your question - no an angel wouldnt need anything thats confined to our human view of needs, maybe now you can stat to see why I think its all complete tripe in the first place....
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