The financial sector has always had mixed opinions on Bitcoin. Goldman Sachs is a fine example of how quickly those opinions can change.After dismissing Bitcoin for several years, they are now keeping a close eye on it. Moreover, the bank is confident Bitcoin will succeed as a form of real money in the coming years. While that is a commendable statement, it is doubtful Bitcoin will still be the leading cryptocurrency by then.It is evident the interest in cryptocurrency hasn’t waned all that much…