Too many
But its like the knives in the block in your kitchen - the right knife depends on the purpose - and even in a kitchen we use several
- Chopper? min 6 inch, heavy and thick (ka bar fighting knife or bigger, CS Bushman, small machete, axe, hawk)
- Food prep and wood carving - smaller 4-6 inch blade - (Mora, canadian style knifei.e grohman - great for dicing)
- Survival - impromptu anything 4-6 inch blade but heavier (fallkniven F1 - but that is pricey, sog seal pup - but a tactical look, RAT)
and art - what you like - which is probably the deciding factor for most or us - otherwise we would all use Mora's, Grohman boat knives, or CS bushman
And frankly most people will carry a folder as well either a single blade like a benchmande mini griptillian of a Swiss Arm Knife (SAK), or a multi tool
To do everything you need several eged devices - google nessemuk trio (?) for one well known woodsman's combination. Fudo just gave a good modern version of it
Hope this helps