Ordinary users hate change. They always do, regardless of how successful (or not) the changes are later judged to be. This doesn't argue against change so much

Ordinary users hate change. They always do, regardless of how successful (or not) the changes are later judged to be. This doesn't argue against change so much as argue that the costs need to be worth the disruption - you don't move houses over a carpet stain, and you don't rebuild your UI lightly, either.