Many drivers ignore the sign "SLOWER TRAFFIC KEEP RIGHT".
Regardless how fast (or slow) you are driving, if right lane is empty (or there is plenty of room for you to drive the speed you like on right lane) why hog the left lane, especially going at exactly the speed of other vehicle on the right lane so nobody can pass.
Nobody owns any road, highway or surface streets, you drive at the speed you like for whatever reason you choose, let other drivers drive at speed they like. Remember this sign on Interstate Highway (and on some state highway too): "SLOWER TRAFFIC KEEP RIGHT"
Don't force your idea of safe driving to others. When I'm on local highways, I usually drive at around speed limit, which is 65 MPH, on second lane from the right most lane. I stay away from the right most lane because it is the lane that other drivers use to exit or enter highway. If the lane I was on was slower then I move to the next left until I can safely move back and maintain my normal speed.
I will move to the left most lane if and when I drive faster than others on every other lane. If I decide to slow down then I immediately move to the farthest right lane that move at the speed that I like at that time.