What am I missing???

[quonie]

I can appreciate the hull design and Seacraft's seaworhty ability. I can appreciate restoring a classic boat.
I just feel that the boats built,let's say 1960's and 1970's
with all that wood core everywhere were not designed to last. Sooner or later the core is going to rot. So why buy and old classic 23' and tear it down and replace wood with another wood core? The same problem will eventually occur. No - Yes ?? Why not replace the wood with synthetic materials? The exterior is glass. What am I missing?