Well, anyway, "some" of the comprehension which you are wondering about..... I think, might be best explained to you, non no ironically, by a cat.
Raise a kitten, bond with them and look after them until they pass, then you will probably understand ?
No shade at all, just a thought, from a person that has known many cats.
The best one I ever tried was an old, sharp, and very well weighted one which belonged to my grandad. Also had a foot powered sharpening wheel, I used to love that thing, sometimes you could peddle it so fast that with the momentum, if you were not careful you could break a knee or something.
One time as a kid, I was using a small hand held scythe and cut straight through a bit of wood and stuck the scythe straight into my shin, where it stuck, missed the bone so, it was all good. Good times.