I’ve owned a good quality down pillow for over a decade and it’s still in great shape. I fluff it up every few days and always keep a zippered cover on it. It’s getting towards needing some extra down added since it does lose some ability to maintain full loft after years of use but that’s it to keep it going. It was an investment though at about $250 (I bought it from a place that manufactures domestically using down from geese that were raised for food).