When people started to invest their money, there was usually only gold or silver as a safe investment, Bitcoin did not exist yet. But i have noticed that people who have invested in gold or silver before are more open to Bitcoin. They see Bitcoin more often as a new investment opportunities than people who have never invested in anything. Many people who have never invested money in anything anyway are more likely to reject Bitcoin than investment opportunities. It seems that there are people how are willing to invest as long as it promises profit and people who will not invest in anything in their lives anyway.