1) As previously mentioned, chopping is a dangerous and somewhat uncontrolled activity. This is especially true when you're tired.

2) Choppers can assist in shelter building, but so can smaller blades.

3) A chopper's only contribution to staying hydrated is firewood. Its easier to baton than chop and choppers cause you to sweat... a lot ... thereby robbing you of precious fluids.

4) Chopping burns tons of calories that are extremely difficult to replace in the wilderness.