1.People saw it as a scam simply because some of them venture on it and transact with others they didn't know, they've been captured by the sweet talks and such that later on, those people whom they transact with took all their money. And another thing is that average people who known Bitcoin barely, tend to invest knowing that they don't have enough knowledge and experience on it which eventually leads to their own loss. Therefore, people get scam because of being ignorant.
2. They don't think it will not going to be the future because they don't believe in it. Besides, most of them are not ready and worse they don't willing to accept it, they locked up themselves on the old traditions.