You know if drivers were more considerate...I wouldn't be having an existential meltdown..........right now.
Getting stuck behind slow drivers in the left lane and having meltdowns over it is just not worth all the angst and blood pressure increase. When it happens to me, I still drive defensively (staying one car length back at a minimum, more if it is raining), and look for a safe opportunity to pass them on the right if they never move over. I am always able to pass them fairly quickly and go on my merry way. No need to get all bent out of shape over it.