My first (high school) record collection was sold during a weak moment in college one Friday afternoon when I needed money to go out. I don't recall getting more than $2 for any record at that time, but I was more interested in raising cash than preserving memories and collections. So post college, I ended up slowly rebuilding albeit an entirely and completely different record collection than the one I had in high school.
Twenty years later, feeling the sting of robbery and with no recourse because too much time had passed and there were multiple moving companies involved, I decided the only remedy was to start over again, for a third time. Here I go, working on it for the 3rd or 4th year in a row.