The security part is really irony. Credit card numbers can be stolen fairly easily without much effort either by carding, skimming or by malware infection. Bitcoin only have the risk of malware infection can have be secured by having a cold storage and a hot wallet.
This is true, but at least they are improving security with the new PIN credit cards. These have not yet been adopted fully though but once it does it will help stop a lot of the skimming and carding I think. Bitcoin is still the superior alternative though!