After 13 years, all that networking stacks up. Literally. I wonder what all these people are up to?
Yes, there are many memories that will disappear if you get rid of those cards. I have purged many things since my school counseling days, but I still a one stash waiting for a scrapbooking/collaging day in the distant future! The art may not happen, but just to go through and remember some of the precious people I worked with....it will be a fun time!