Thinking about this topic: I have to disagree that keeping toys MIB are worse off than loose toys.
To this date, I have not come accross an MIB 20+ year old toy that is worse off than its good condition loose counterpart.
However I am in agreement that there is no point to keeping toys MISB unless you are a 'transitionary' collector or only see 'what they are worth' in your collection.
That is why I don't agree with that guy in the 40 year old Virgin movie - He was clearly only collecting for the money value and on top of that he sells them because some dumb chick tells him too.