We've scanned all our parents' photos, but not our own. I did go through lots of our own and wrote on the back who was in the photo and where and when it was taken. I thought our daughter might want them one day. We have scanned some of our photos that had begun to change color, but it was really time consuming.
I remember when my aunt knew she was dying, she asked that I go through her things, keep what I wanted, donate her clothes, and dispose of the rest (she meant taking the rest out to the garbage cans). She had collected antiques for years and saw people at estate sales going through someone's possessions and photos, and laughing at why in the world they had kept this and that. It took me a long time to let go of all the photos. I finally realized that most of the people in the photos were strangers to me because they weren't IDd in any way.
Today I unzipped a bag with two WWII Navy pea coats of my Dad's and my uncle's. No wonder the closet pole came down! I guess I'm hoarding....
Edited to add: I just finished reading all the posts in this thread. Whew! I think I'm in good company. I'll try the "one room at a time" plan to begin.