I thought the same until I decided to let off the throttle (figuratively and literally). Rather than NASCAR-drafting other vehicles (and not saying that you do), I leave space to allow idiots to be idiots. I don't drive in other vehicle's blind spots, line up with them, or drive where I'd get cut off if they merge in front of me. In fact, I expect people to merge in front of me.I'm not trying to do anyone a favor with the way everyone around here drives, or should I say doesn't know how to drive and pisses me off on a daily basis. I rarely have my back end weighted down.
If I see people that are making an unprotected left at an intersection that I'm approaching, I'll let off the throttle so they have time to turn. If I have a "fresh" green light, I will still approach with caution. Green means you have the right-of-way, doesn't mean others will stop.
On the freeway, I don't have a set speed I want to go. It's easier in the Frontier since I rarely exceed 65 no matter the conditions. But in my Honda, I will try to keep pace so I drive faster than semis but slower than most passenger vehicle traffic. That way, again, I don't get pissed when I'm trying to cruise at 75 and someone is going 60 in the hammer lane.
Doing so has made driving virtually stress-free. I probably spend 10% more time to get somewhere, but I don't arrive angry at other drivers or traffic.