Keychain Multi-tools

People dismiss these as pointless because they almost always break. The crux is this: Why do you carry one?

Useless for emergency use, not reliable enough. Perfect for daily ADC use and cheap to replace when it breaks. I carry a Gerber Dime and use the parcel cutter almost every day, sharpening it a couple of times a year. Screwdrivers, cool. Neat bottle opener. The tiny scissors are borderline useless. I wouldn't use the pliers for anything serious. I'd get real ones from the shed if I'm home... or use the full size Multiplier in my EDC bag if I'm not.