OK, I know I'm going to get creamed for this, but here's the opposite point of view.
I don't like to drive fast -- 5 miles an hour over the speed limit, I can handle that. Maybe even 10, but more than that freaks me out. So I drive on the right -- so far so good.
There's a place here where the on ramp is on the left. Invariably, I get off the ramp, and I'm still getting up to speed, maybe 50 in a 55 mile zone. Of course my attention is to keep speeding up until I'm at 60 or 65 and then get over. Trust me, I want to get over as badly as you want me to get over, but before I can even think about someone comes speeding up and they're right on my tail. So, instinctually, I slow down. I can't help myself, it just happens. Now I'm going 45 in the left lane, and so people start passing me, going 70 or 75 on my left. Even if I speed up to 70 (which I'm not willing to do because of the guy on my tail, he's too close for me to be comfortable at that speed), I'm not going to be able to merge right. So the guy starts blinking his headlight and honking his horn.
What's the right thing to do in this circumstance?