The Hummer serves only one purpose, and that is to the satisfy the narcisistic needs of the totally self-absorbed people who purchase these vehicles. On every other level, it is a menace. Let's start with the most basic reason why the Hummer should be banned, and that is safety. The Hummer is so much larger than every other vehicle on the road, including other SUV's. If you are trying to make a left turn, and a Hummer is trying to do the same thing, your vision of oncoming traffic will be almost completely blocked. Thus, in trying to inch closer to see if you are clear to make your left turn, your chances of getting hit are raised substantially. It has happened to me more than once. There have been numerous times when I and a driver in a Hummer were both trying to make left turns, and my vision was completely blocked. And this was with my wife's vehicle which is itself an SUV, a Chevrolet Equinox. After nearly getting hit when trying to move just a bit more to my left to see if there was no oncoming traffic, I now simply wait until the light turns to make my turn. If you are in a regular car, there is absolutely no way to see oncoming traffic.
The other safety reason is the obvious weight of a Hummer. What may be a safety advantage for the driver of the Hummer is a definite detriment to the other driver if that person is herself not in another Hummer. Any type of collision between a regular car and a Hummer will seriously damage the much smaller vehicle, while leaving the Hummer in much better shape. I see no reason why someone should have that type of an advantage on the road to the obvious detriment of everyone else.
The other reason to ban the Hummer is energy independence. We are now entering the worst energy crisis since the long gas lines of the 1970's. The United States, as a matter of economic survival and national security, must soon begin to become energy independent, and the enormous gasoline that Hummers consume does not do anyone in America any good! Such a step, along with conserving and exploiting our own resoureces here in America would be a good way to start the process of becoming energy independent.
Hummers should have never been introduced into the market. It is a vehicle which puts quite literally everyone else on the road in more peril. The only function this road menace has is to allow its drivers to show off their supposed affluence. Thus, my message to all Hummer drivers is this; if you feel the need to show the rest of the world how much money you have, buy a Lexus. The road would become much safer.