It is the Holy Word of God, but you should not cling to the piece of paper, as Tolworth John states. If it is still usable, I would leave it for future generations as some have suggested, but if it is completely worn out, I would throw it away and buy a new one. And if you feel that you should have left a Bible for future generations, buy a new one for them as well and put somewhere for them to find, since they will have more use of a Bible they can handle than paper that will dissolve in their hands.
Treasure all of the wisdom He has taught you through studying this Bible and seeking His face, but remember that it is He, the Lord and His Word and His Book, not the specific paper on which you have read it, that is the Word of God.
Any highlights that may be specifically helpful to a new reader in your eyes, you may add unto the new Bible you wish to give away.