Over half the Bitcoin exchanges have gone bust. Entire Bitcoin "stock exchanges" disappeared with the money. Bitcoin "investments" promising substantial returns each month were, of course, Ponzi schemes.
Bitcoin is a scam magnet. Irrevocable, remote, anonymous money transfers are the scammer's dream. (Yes, there are people talking about cryptographic escrow schemes so you can buy something with Bitcoins and have some recourse if it doesn't show up. So far, that hasn't reached usability.)
That's why Bitcoin needs regulation. If you're going to hold other people's money, you have to be regulated. Deal with it.