Here are some reasons you might want to get rid of almost all your stuff, and how you might go about doing it.
Some people paint, some people read, but there are lots of people collecting things as a hobby. If you wish you had more nifty things to display, consider starting a collection. I have some suggestions for you.
Need money? Spend time going to weekend yard sales to find valuables to flip for real cash.
The time has come to clean out your parents house and you realize there is much to do from sorting, gifing items, to selling the house. The most successful job is done in stages and with help.