So you're mad that they're going slow in the slow lane?
They can go however slow they want to go in the slow lane, but at least they could be courteous enough to move over a lane for 10 seconds to give merging traffic room to merge. Don't tell me you've never been in a situation where two cars - one on the highway and one merging - met in the same place at the same time in the same lane, and wondered who should be the one to make room - the guy on the ramp in between a car and wall, or the guy with a whole 2 empty lanes to the left of him.
In the interest of common efficiency, sometimes people just need to get the hell out of the way for a few seconds. It's really easy to do, it avoids conflict, nobodys feelings get hurt, nobody gets pissed, nobody had to let off the cruise control, nobodys day is ruined, and maybe if you're into that sort of thing you'll have a giddy feeling inside because you worked as a team with another motorist. In the interest of common efficiency.
If driving smoothly and efficiently is me being a dick, then so be it. That must mean the dude who brake-checked me when I politely flashed my brights so he'd get out of the passing lane must be a really swell guy.
World doesn't revolve around you and your lead foot.
As far as I can tell it revolves around the laws of physics, and me slamming into your trunk when you
stop at the end of an on-ramp because you're scared is a good lesson in that. Get off the road if piloting a 4000 pound vehicle into a gap 20 feet wide is too serious a task for you.
I take a mental note of precisely how long my car is. I pull up to a parking block so that my front end is right on the edge, I get out and note this fact, then I get back in to take mental note of what it looks like out my front and side windows when my nose is that close to an object, then I practice parking like that consistently. I do this for the front, sides, and rear. I'm almost embarrased to have to make the point, but I've never run over a curb or bumped into anything or backed into anything, all of which i've seen people do in recent months. I know within a few inches exactly where my car is in relation to objects around it, and I can stop at a line, back up to a line, run over a bottle, drive over things without hitting them, squeeze into tight spaces, and I've had to put all these skills to use more than a few times, merging into the only gaps available that were literally just big enough to fit my car in. Dangerous? Only if everyone else freaks out and hammers on the brakes. I obviously know where my car is because I put it here, which you never thought I could do, but I did. Carry on - I promise I won't run into you.
And no, I don't think that that is asking too much of drivers, simply to know where their vehicle is in space and how to operate it. I once got in an argument with a guitarist outside of Starbucks about how important driving skills are. He said he'd rather concentrate on playing guitar. I asked him if he rode his guitar to work every day. What? You don't? Of course you don't idiot, you drive a car.
Be good at it. These things are powerful enough to kill people and driving them is very serious business. Nobody has ever commited murder with a gnarly guitar riff.