Well, I think everything deteriorates with age. I know I am. But I have 4 wood/fiberglass laminate recurve bows ( 3 Shakespeares @ 30, 40, and 50 lb, and 1 Wing @ 47 lb) that were made in the mid to late 60's and they still look and shoot just fine. There is some discoloration in the fiberglass, I think it's called crazing or something like that. It's on the limbs where most of the flexing takes place. But the bows look sound and shoot fine, so my kid and I will just keep on shooting them. If there were any obvious cracks, splits, or delamination of the fiberglass from the wood, or other such flaws I would retire them.