Say you bought 10000 dollars of bitcoin in January '13 then cashed out in November '13. Tada you just became a millionaire durp.
You seem to be inferring that profit from buying and selling Bitcoin is somehow special -- different than, say, gold or some other collectible asset. Is that what you're trying to say?
Yep it is different because profit on gold or silver is subject to "capital gains tax" bitcoin is not. Jesus dude go study some economics.