Complexity accumulates naturally; simplicity usually requires intentional work.

Systems, houses, processes, and schedules all get more complicated on their own. Every exception, addition, and special case is added by somebody with a reason, and nothing removes anything, so the accumulation is one-directional. Order does not maintain itself. If nobody is deliberately taking things out, it will only ever get denser.

Schedule a regular pass whose only purpose is removal. Once a quarter, look at what has accumulated and take something out. The habit has to be intentional because the accumulation is automatic.