I don't think you quite understand.
Wood is an excellent engineering material, it's widely used in construction, and can and has been very successfully used for ships, aircraft etc. During WWII, even when aluminium alloys were available, British designers used wood, to make very highly successful, fast, and very robust aircraft like the de Havilland Mosquito.
Yes, of course you have to consider multiple properties, but actually, wood is very good under lots of different properties, particularly compression, and wood in general and balsa structures in particular have *surreal* rigidity. See this table:
so by weight, balsa is the most rigid material known, by a long, long way.