change my view

There isn't much a fork can do that your fingers can't, only thing that comes to mind is extracting pickles. Of the western set I think it was the one we have gone longest without, and if we are including non-western utensils then give me chopsticks.

Simple fact is though it's the knife that you actually need. You might get served food that doesn't need one but that is because someone else has done all the cutting.