Since I was young, I grappled with the thought of why adults always were so pressed for time. They always seemed to complain about not enough time in the day, too much to do and so on. As I thought, one day at the age of 13, it came to me. Follow this logic;
When we are young, we have little to fill our days. Sleep, eat, school. Summers seemed to last for years. Days for months. Hours for days. In short, things moved slow to us and our recollection of our childhoods support this notion. But as we grew, school became more demanding, we had deadlines to now deal with and schedules to keep. Yards to mow, practice to attend, etc. We became "responsible" for our expected actions. And as you continue to grow, so do your responsibilities. Because of this, I contend that a persons "sense of time" is directly associated with responsibility. After all, as we grow, what becomes more valuable to us than time? Our entire lives are measured by what time we have left, what time we have available, how many hours we have in a day.
Days seem like minutes, weeks like hours, years like months. The exact opposite of how we felt when we were young and had no responsibility. Anyway, that is my crazy theory of why responsibility is directly related to our perception of time. Hmm, I better get back to work. Only a few hours left in my day!