Steady or Varying Speed on Motorways

[T5R+]

I tend to drive at a given speed at or around the speed limit(depends on traffic conditions) and use all lanes. Naturally, being able to judge and plan manouvres in a safe way helps me to keep at a steady pace and prevents me "slowing" the spirited drivers or "cutting in".

My current style means, I find myself overtaking the same vehicles on numerous occassions, on a long motorway run.

Sanity question - is it normal in this day and age to travel at a steady speed or do most people find themselves constantly varying their speed.