And your opinion about BTC being overpriced is based on what? All those "bubble/overpriced" responses seem to me very generic and not backed by anything else but repeating something overheard on the tv, or maybe in the cab. It's a waste of breath. You can as easily say it's underpriced as overpriced or right priced or whatever.
It is clearly overpriced since almost nobody uses bitcoins at all.
They just buy it, put it in a wallet, wait the price to rise, and then sell it.
The currency will never be massively adopted, because it has so many problems (delay for transaction, high fees, limited amount of available money in the world, and so on).
The people are just buying because the price is rising, and the price is rising because people are buying.
Meanwhile, early adopters and miners are selling it and becoming millionaires.
But some day you will not find any fucktars to pay more than x USD for one bitcoin ...