The passive aggressive left lane rs are causing road rage, plain and simple. Forcing someone to pass on the right, a more dangerous maneuver than excessive speed I might add. It is a good law.
It is no ones imagination the roads are much more crowded than they were just ten years ago. The population is aging, old people drive slower and more cautiously. Driving skills have not improved a wit, air bags have defeated Darwin's Law, more idiots survive to drive again. (if you are not an idiot and an airbag saved your life, relax.)
If water, or snow blowing up off the tires of trucks is scaring you, perhaps it's time to pull over and get a cup of coffee and a danish, wait till the rain lets up. Do you remember it being so bad twenty years ago? Rain and road surfaces haven't changed, your perception, and reaction times as well as possibly your vision have.
Merging onto an interstate highway... takes about the same mental skills and eye hand coordination as hitting your mouth with a straw in a glass of Coke. IGNORE the sign 600yds back that said ramp speed 30mph, that was then this is now. 100yds before you encounter traffic be going FASTER than those you intend to merge with. Move left and apply brakes OR accelerator as needed. It is no more the responsability of those on the interstate to move over for you than those people in Perkins to come out and move their car so you can park easier. Read that over again, they don't have to move to accommodate you. Yes, some could, and don't, the same folks could hold the door for you at the filling station and don't. Are you screaming at them, rendering obscene gestures, provoking a fight in the Stop and Rob parking lot?