Most people don't get excited about collecting currency period, so it stands to reason that within the hobby, people would get excited about different things. I don't have much of an interest in fancy serial number notes, but I would never suggest that collecting them is any less "valid" than what I like to collect. On the coin collecting side, I'm baffled that people will pay big money for what I consider to be meaningless die varieties/VAMs on Morgan dollars
. To each their own.
Bottom line, the prices prove that folks like Steve are "right" because they are obviously highly collectable. Good news is nobody can every make you pay for one.