Which Adhesive to Use?

I am in the process of documenting our family history. My goal is to document our history in an attractive manner. I have carefully scanned in all of the old pictures, color corrected, etc, etc. and been careful to keep everything acid free. A LOT of work is already behind me. While I consider the books attractive, they are not intended as 'coffee table books'. I am putting many pictures and lots of information per page and using the slip on page protecters. I have been using the craft (acid free) glue sticks for most everything because they seem to be the inexpensive route to go. THEN . . . . Last night someone told me that the glue from the sticks only lasts about 5 years and then dries and stuff falls off. Has anyone heard this info or had an experience with the glue sticks? Do I need to switch to tape? (I have about 40 of 100+ pages done!)