It isn't about stubbornly not letting people past it is called riding defensively. People pass far too fucking close in their cars and usually at too high a speed. If you place yourself in a position where they can't pass you until there is enough room to do so safely then it protects yourself more from these idiotic cunts. I couldn't care less if I am pissing you off if it means you aren't going to put my life at risk trying to squeeze past me.

Bikes have as much right to be on the road as cars and if you wanted to could ride right in the middle of the lane and that is still completely within the law if that is what you are so concerned about. In fact being the smaller and more vulnerable of the road users the bike has the right of way in the eyes of the law so the driver, by law, should be giving way to the cyclist. They should also be giving 1.5m of space when they do pass the cyclist which 75% of people don't do.

Most drivers don't know the rules and laws of the road and just make up their own like you are now pretending people are "taking the law into their own hands" because you car brained fucks want to get to where you are going 30 seconds faster.