If they fail thy can do some minor damage to the user, not such a huge loss.
They stoped "Breaking" because the payoff was just too much, when they did break I used to jump for joy. it turned out that every time they "Broke" I looted them for a huge payback My record was 3 fused wireing and more jems then i put in to it, usualy a cable "Break" would net me at lest 7 gold.
PS, can anybody acutlay provide any information to the rumor that releacing has ANY effect on the cables, over two years of using them and my research shows that this is a load of crap, that posters keep perputating due to ignroace. Sure I Could be wrong, but after evaluating 2 years of use i see it as 50% on basic cables(regardless of weather they releaced or not) and 73% on the advanced(once again, releace status had NO effect, they numbers are the same(as an average))
so can anybody provide crediable proof of tsaens stament? I mean for real, not theroycraft, or rumor.