Bitcoin is a cryptocurrency. It is used by a lot of people. The user of bitcoin is increasing at a high rate. It's being using so widely. Now we can buy any service with bitcoin. We can get or give online payment through bitcoin. It's been used at too much way that it's seemed like it's a asset. But it's not a good thing. Because it will cause various problem. We should treat bitcoin just as a crypto coin, nothing more than it.