Well that title is a bit melodramatic. But it does have some meaning behind it.
I’m talking about how bad brake cables can cause accidents. Having your cables snap on you can lead to disaster.
My personal tip to you. Replace your cables at least once a year or if you feel like your brakes aren’t braking and derailluers aren’t shifting. If you see your cables fraying or rusted out, replace them.
Heck, it could save your life!