Bitcoins operate off central Banks meaning the government can not control its supply or influence its value like they do with fiat currencies. This threatens their ability to manage national income. Also since Bitcoin can be pseudonymous, the government worries that people may use it to evade taxes, launder money,Or finance illegal activities.
Why are some embracing it while others seek to regulate or restrict Bitcoin??
All unfavorable things will be considered bad. Caring what they are in all the breakthroughs that are beneficial for users other than the feedback that they can find.
Bitcoin is created to restore the confidence of the world community in the financial system and Bitcoin can be proven as an alternative currency.
They set to limit bitcoin because bitcoin can make users find privacy and convenience without the need for third parties.