Packing is exhausting.
Think about it: as you go through each piece of clothing, trying to decide what to take and what to leave, you can't help but be flooded with memories. Sometimes they're imperceptible; you don't even realize you're remembering. But all the sorting, choosing, remembering, and sitting on the suitcase just to make everything fit are more tiring then you realize.
You're stressed that something imperative is going to be left behind.
You're worried that you're taking all the wrong things.
You're apprehensive about leaving a place you love. Or maybe you're thrilled to be leaving, but have no idea where you're going.
You're going back somewhere, or you're going to a brand-new somewhere.
What will it be like? Why do I have go? When will I see this place again? Will I love it?
You subconsciously ask yourself these questions with each shirt you fold.
I've always hated packing. But since traveling is my life's passion, I've always been able to bear it.