No person is without a baggage.  We, possessive by nature, keep things—physical or metaphysical.  As the days pass by, more things are put in each of our baggages.  When they get too heavy to be carried all together, we either have to throw some of them out or just collapse on the ground, staring at the others passing by.

Keeping it to the size of a carry-on is so difficult, because we are possessive by nature. We keep things.