Stealing is stealing, no doubt about that.
Why would it be any different if it were fiat that you were stealing?
The value of them are relatively the same with more bitcoin is worth. Undecided
Yes! Even though others are saying bitcoin is still not covered by the law, but we must stick we our morality that stealing is really a bad act. It is a criminal act no matter what and where a person is going to do that. If it is cyber stealing or not and still it remains a criminal act. But if that is just an accident of sending someones bitcoin then that is not a crime at all, you can just return it to the sender.
The legality of bitcoin is still into question. Because if stealing bitcoin is illegal no fake companies, investment centers, hyipswill exist online. I don't think FBI has interest in catching people who stole virtual money.