I always assume that I am building for 100 years, and for at least 20 of those years, the building will be owned by a complete moron who never fixes anything. I think this pretty much sums up the situation of every old building I have ever had the "pleasure" of working with.
If you are building for 20 years, engineered wood is a safe bet. If you are building for 100 years, less so.
We are moving back to a small house because the last kid is about to leave the nest. So we'll build it small but build it right.
And have a pole barn to keep all our junk . . . . :-D