Unlike conventional coinage-prone currencies, the cryptographic rules applied to bitcoin make their owners avoid the same risks.
Bitcoin payments are fully encrypted / cryptographic, so personal info is safe and unobservable to others. What other people can see is only the address used for the transfer only. You are also protected from identity theft cases that rampant in ordinary banking.
We can say that Bitcoin is the safest way because it is very high in security. We have our own private key and no one can know about that information except us.