My answer:
Remember the saying don't judge a book by its cover? LOL!
Anyway, I LOVE NEW books! Especially hardcover ones. It lines up nicely on the bookshelves. :) Paperbacks are great when you are the kind who brings your book everywhere in your handbag or pouch. I settle with paperbacks most of the time for the convenience(hardcovers are kind of heavy) and price!
Old books are like antique. Nice to see. Scared to handle; incase of breakage. :( But to have it is awesome! I have my dad's Oxford Dictionary (First Ed by Longman). ^__^
Can we touch on fonts, smell and feel of the papers? :) Mini fonts kill sometimes. Some papers smells funny but many smells nice!