I have a hard time throwing things away. Especially if I have had it for and extended period of time. Now I don't think that I am a hoarder but when I have watched the show I find myself saying "heh, that lamp from the 1964 Worlds Fair could be worth something....and your throwing it out?" The longer that I have something the harder it is for me to get rid of. Ill look at an old ticket stub from a Led Zeppelin concert on Halloween night 1969 and say " why did I keep this" Then I remember that it was my first concert and that there only a couple of hundred of us were there that night to watch would be come one of the greatest bands in rock history. I go threw this process every once and awhile and I know that some things will survive the purge. Usually if I haven't looked at something, a note, a receipt or an old coupon for $15.00 oil change from 1965 at a now defunct garage, I will reluctantly throw it out. Some things become more valuable with time. They are often categorized as antiques but to me that are just junk that I can now sell on ebay for twice what I paid for it.
It can be fun though to go thru the memories as I toss a tee shirt that I wore during my first hike up Mount Washington but has been relegated to a hole filled rag used to wipe the grease off tools in the garage. But everything has its time and purpose and nothing lasts forever so toss it out and fill a landfill some place.