Can we please get a choice of a non-infantile UI in Android in the future? The candy-style material UI just pushes me not to use Android for serious work, more

Can we please get a choice of a non-infantile UI in Android in the future? The candy-style material UI just pushes me not to use Android for serious work, more for fire-and-forget tasks I don't care about, as interfacing with it is extremely unpleasant (only slightly better than WP8).