It's possible if u don't know how to keep your keys private. And also access to your email
It is true the bitcoin will make the world currency and he age of the bitcoin will be high I wish in the future all the people use the bitcoin and the bitcoin will be the currency of the time, it is not good to share about the private key with more than one person because the bitcoin is now helping a lot of the people and it is the reason why the bitcoin is using the space for the long time holding and the block chain will prevent the wallet from being hack.
Blockchain is really the best system to protect anything, the hacker never have chance to attack a system used Blockchain as Bitcoin wallets.
Unless, the onwner of Bitcoin Wallets give hacker chance to know the private key, only this chance can help hacker rob money from Bitcoin wallets (offline).