At present situation government actually not so much concern about such kind of currency for that reason people are not so much interested for using this currency. it is now use as a electronic currency though computerized system.
in terms of purchase and sales bit coin holder's are safe but the lack of proper monitoring system by implementing different protocols client are demotivated for using this currency on investment projects.Every country's government should established a policy for securing those client who are holder of bitcoin like an cash or deposit account holders and this types of policy help to motivated bitcoin holders for investing different sector for establishing new entrepreneur in order to development of economical condition.
the development of bitcoin is very fast for now, many people who have been involved in bitcoin investments, I think bitcoin investment is safe, depending on how we keep it, we must be wise in choosing the wallet we use, lots of purses that we can use in bitcoin, we only should know and learn which wallet is safe for us to use so that things do not happen that we do not want.
it is not 100% safe for us, because technological advances can be misused, like hackers, they are also always looking for loopholes in a system to break into.
the role of government is also very important in this case, the government should make a policy on the use of bitcoin and security and comfort for existing bitcoin investors.