BTC isn't money. You make a great comparison of BTC to gold, a commodity. Gold isn't used anymore as money because there isn't enough of it for that role. BTC is in even worse situation. BTC is a great collectible commodity that will be growing in value, like Campbell soup paintings or Ferrari California. Great storage of value, yet not usable as money.
The next cryptocurrency which would contain infinite mining, balanced by infinitely increasing complexity, will very possibly make it as a money. It is understandable that BTC in order to crack the glass ceiling and gain trust and acceptance had deflation built-in. Now that POC succeeded the full-featured release is to come (though lets see about alpha/beta/etc... :)