Every one of my posts is written in a Word doc complete with photos. I then cut and paste and once the post is up, cut and paste the URL into the doc. Initially these are filed chronologically but later I go through and file them by main subject also. They aren't paper, but at least I have an easily accessible copy on my computer. They are backed up regularly also.
I'd need a whole room as a library if I printed them all out. LOL
But recording stories for genealogy is an excellent idea. My sister is an avid genealogist and the stories are her favorite part, but there's nowhere to record them.