Stop in for a cup of coffee

Question for you all....

Why do I worry about the engine for Bonneville running high rpm for 5 miles when I don't give it a second thought to run an engine at work right now at 5500 for 30min? Or last Thursday at 5500 for 3hrs? Or years past at 6200 for 12hrs straight? Shouldn't I be numb to it?
I would just make sure your oiling system is up to task, and a good balance job on the rotating assembly.