You also were too verbose...

    OP Q: Books worth it?
    Answer: Nah.

Or maybe we can remove all the vowels and connecting verbs and extraneous adjectives and still get your point across...

    "Ans shld b obv frm SvN. Shldv ax "books worth time?" Books take 2 mch time 4 same pt."

Yup, you were definitely still too inefficient...