You are in the minority here. A bunch of college kids did a video of what would happen in Atlanta if every one drove the speed limit. They all got side by side on one of the major interstates and drove exactly the speed limit. It caused a massive traffic jam and people were going apesh** to get around them.
You have the right to go the speed limit, you do not have the right to impede others who want to travel faster.
Move over to the left and let the rest of us who have some where to be go past you. It is horribly inconsiderate to waste others time and by driving slow you are wasting the time of other people.
And to add, if its rush hour, you should be going as fast as the person in front of you. If there is no one in front of you, you should be in the left lane, regardless of your speed.
edit:
Found the video, it is horrible editing but its only 3 minutes.
https://www.youtube.com/watch?v=OoETMCosULQ