... but it's mostly for festive reasons, or special occasions. It takes Rocio months to weave and embroider the fabric; her husband used to wear tradition alpaca/llama wool pants, poncho and a hat that she would make, but it's too expensive and takes too long now. She says it used to make sense, as the woolen clothes would protect much better from the Andean cold, but now that their livelihood is changing (keeping a hostel instead of herding animals in remote highland pastures), it isn't necessary. And synthetic clothes are so widely available and so cheap.
For younger people, it's also the "cool" factor. Most young Peruvians, Ecuadorians, Bolivians want denim and smartphones, not woolen pants and a shepherd's whip.
The world is getting smaller and more uniform by the hour;)