Decay rate used to be less. Know what happened? People used the 100% immunity of freeport to simply store ships, store resources, store crew, store tames, store high level blueprints, etc. Indefinitely. Just super-stock it with repair resources and repair it once or twice per day, and completely avoid all PvP mechanics for a small maintenance time. Freeports got extremely cluttered with ships and tames, and sometimes even fully clogging ports with ships, disallowing new players from being able to make or set sail with ships. Decay rates were increased, and now the overhead for storing ships in freeport is more annoying, making it less desirable. You can still do it, but you need to green anchor your ship and level up resistance quite a bit, but that aversion makes most people avoid storing ships there for long, now.
