Why does everyone include fishing and snaring gear in their kit? Food is not that high on your priorites. I see the point that both the snare and fishing kit essentially are small collection of multi-use items (cordage and sharp metal objects), which is good. But why the perpetual fuss about fishing and snaring? Shelter, water and fire are usually much more important. Stick some snickers bars in your pack so you'll have an energy boost. If you can obtain food without much effort then eat it, but don't waste energy trying to feed yourself.
I carry fishing line and a few lures in my PSK. In my AO, we have some of the best lake and river fishing in the world. Many times, a quick poor man's fishing pole (cleaned up tree branch) and a lure or dug up worm on the end of line will yield a trout or 2 for dinner. In a survival situation, I would rather eat fish over a sugar laden snickers bar that only jacks up your insulin levels for a few minutes...
As for the snare wire, I carry it for many other uses other then snare material.