Having an accurate inventory of your possessions is essential in the event of theft, disaster, or loss. Don't wait for an emergency to happen to get organized.
I have recently relocated. I packed up all of my belongings, tagged my townhouse with a "For Sale" sign, and have journeyed to the other side of the country. As a result of not bringing much with me, I've been able to exist solely in this very place at this particular point in time.
Many years ago, I decided I could no longer be married to my husband. Unbeknownst to me, my leaving meant that my things in the house suddenly became his.