If everyone kept right when not passing like we're supposed to there would be no "changing lanes willy nilly". If you get passed on the right neither you or someone in front of you is fucking up.

There are diminishing returns with increased speed, not going to deny that or any of the safety concerns, however extremely passive drivers and lane warriors are a major nuissance and contribute greatly to traffic. No one knows how to zipper merge properly and worse, they take it as a personal afront that you dared to cut ahead of them in traffic.

It boils down to self centeredness and discourtesy.

Thanks for mansplaining basic driving concepts.

Don't act on your assumptions as though they're reality. You'll always be wrong and appear insane.