Alvaro77,
I see that you are starting to contradict yourself, your conclusion is that coin collecting is 'dumb', based off the data you collected from this site. You then started to talk about how you enjoy Morgan's/WLH's yourself and would pick them up here and there. I think you may want to reconsider your conclusion.
You also say that "one of each [coin] is enough". Many type collectors take that very same approach to collecting and try to acquire one example of each type to study. A perfect example of this is the Dansco 7070 type album. Would you still consider this type of collecting dumb? Even if all coins were bought on
ebay and could be sold for roughly the same amount or even for a profit on
ebay at a later date?