Can someone explain durability to me?
Does it have any negative effects when a weapon/armor does not have 100% durability anymore? aka, should i care before it breaks?
I don't see the damage values in the item description going down when its not in perfect shape anymore. But maybe there is a hidden mechanic?

Performance doesn't degrade with durability; either it works, or it is broken.

Ok thanks, then its more of a nuisance than anything.