Umm...now hopefully I didn't miss such an important point, but me thinks equipment can't be destroyed in a way that it breaks and disappears. I believe I got my starter weapon down to 0% once. Went to the repair NPC and got it back up to 75% just fine. Would be bad if equipment could actually break...
FFXI: Rynaria - Mithra on Kujata [retired]
FFXIV: Fancia Dragonkeeper - Miqo'te on Besaid