Best use -- Parachutes!! :-)

Worst use -- Lifeline (parachutes use lots of redundant shroud lines).

I carry mason line for most of the uses I would use paracord for, and light deema or other lifeline for a lifeline (about the same weight, 4k lb+ breaking strength).

Paracord is good for wrapping things like handles or making stuff you use anyway, ie braclets, belts, hatbands, etc. (like kevingg's beautiful stuff) which makes it available and maximizes its versatility.

YMMV

Respectfully,

Jerry