5 years ago I heard about Bitcoins  some feedback are good but some of them are negative

Untill now In my country if you say/discuss about Bitcoins expect that their response are negative.

Why does some people always say negative about Bitcoins?

1. Lack of knowledge about Bitcoins, uneducate People only saw the negative sides of Bitcoins.
2. Some of them say negative feedback because of their experience on some sites about Bitcoins,  because now a days Bitcoin are popular but there are many site will scam you if you are spontaneous to invest in not trusted sites.