Cored hull FRP
Yes, fibreglass hulls should outlive most owners but a wooden cored hull may not. Osmosis or cracks in solid fibreglass are repairable. If a wooden core gets wet the boat may be beyond economical repair. To many people it isn't an issue, but I'd never buy a boat with a cored hull.
Years ago an experienced surveyor told me that if the hull is sound, then most anything else can be fixed. If the hull is soft, then it doesn't matter how beautiful the interior looks, the boat's not worth the money. He also refused to finish a survey in the winter as every wet hull is solid when frozen.
If your boat has a cored hull then make sure you have a current survey proving it to be dry and sound. Some insurance companies have use cored hulls as an excuse not to payout after a boat is destroyed. Once holed and on the bottom the core will become wet. After being raised for salvage the insurance company claims that the hull failed as it already was wet and therefore soft. Unless you can prove that the hull was dry and sound they may not pay anything.
"Navigare necesse est, vivere non est necesse."
- Gnaeus Pompeius Magnus, 81 B.C.