Why wool still wins on durability
Wool fibers are naturally crimped, so the pile behaves like a field of tiny springs: compress it under a sofa leg for a year and it recovers, where a synthetic pile takes a permanent set. The fiber surface is scaled, so dry soil sits on top and vacuums out instead of embedding. Wool holds roughly a third of its weight in moisture before it feels wet, which is why a spill gives you time to blot that cotton does not. And it is naturally flame-resistant with no added treatment. Those four properties are why wool rugs from a century ago are still on floors and no synthetic rug from 1995 is.

