> Knowing that 6am is early is good, imagine how confused you'd be if you travel overseas but the timezone is always the same, you'd have to re-learn what time

> Knowing that 6am is early is good, imagine how confused you'd be if you travel overseas but the timezone is always the same, you'd have to re-learn what time the morning is etc and constantly try adapt if to your situation. Few people travel overseas in their lifetime anyway. If you happen to do it a lot then I am sure you'd get used to shifting the numbers.