I feel bad for the trucks. They know people should wait until the end to merge. But they know people merge miles in front.
And where does almost EVERY car merge? Into the space right in front of the truck, which opens when the cars move but it takes the truck a little while to get going.
And the truck would love to roll back up to the back of the car, but instead gets cut off by the merging cars.
So while it's annoying, I don't get mad at them for blocking the road sometimes. They are just trying to get a few stop-and-goes in where they don't get cut off by another car.
I have a lot of respect for truckers and I try to give 'em all the courtesy and understanding I can. And I know that most are very good drivers.
But I've seen some who creep along in that left lane and won't even merge when some car in the right lane offers them the space! Maybe they have some rationale for it, but I don't see it.