A friend of mine is a very meticulous person once they set their mind on something. So when they were buying a house, they read a lot of books, talked to a lot of people and looked a lot of houses.
They had a fun aphorism (don't know how it translates):
There are two kinds of houses: "if" houses and "despite" houses.
An "if" house stay in shape if the roof doesn't leak. A "despite" house stays in shape despite the roof leaking every now and then.
This is because of different design philosophies. More modern chipboard or glass wool usually get destroyed if they get wet. Old fashioned wood can simply be dried (if it doesn't get moldy / rot). Plastic insulation (or plastic based paints) creates moisture traps. Structures don't dry and usually they just rot.
Everything works fine with chipboard, plastic and glass wool IF it never gets wet. This is usually about as far as people think. (Dealing with pointers or lots of global variables is safe if you never make any mistakes.) But the longer the life span of the house, the less likely that is to be true.