I used to compulsively collect can tabs when I was little, but I always just went for L-3 because in my mind that was their natural state.
I got godly luck on a can of beans last night, but it meant I had to resort to using a can opener.
It's to get rid of splinters. That's also why it's offensive to do it in a restaurant, because it implies their chopsticks are low quality.
i definitely just do it under the table (metaphorically and literally)