Before deciding if you should or not bring a knife, then what type of folding, Rambo or Gillette blade, before all that, first identify the function you will need the gear for, or identify the risk you are trying to mitigate.
So far I read uses for kitchen food cutting, cutting rope, severing a limb, cutting branches for shelter, cutting fire starter and fire wood, and someone stated for self defense during a mountain lion attack.
Many situations and locations have different risk scores.
Some you can mitigate with non knife solutions, other scenarios you may need a grim reaper's cicle.
Solo versus with group, precut ready to eat food or uncut salami. (You can precut it at home)
Do you see yourself ever severing your own limb? If so, bring a PLB.
You will not fight off a mountain lion with a razor blade or chop down trees.
I'm personally lousy at hand to hand combat or hand to cat combat. If zoo animals are escaped in your region, perhaps other distance defenses such as pepper spray, ballistic weaponry or hurling insults.
Each risk has a mitigation plan.
Identify your risks first, then identify the plan to remedy the potential situation.