Originally Posted by Qbear'smama
DH and DD both love the name Jack and I am getting positive feedback from others, but I am not so sure. Isn't Jack really a nickname for John?
No. John is a nickname for Johnathan and Jack is a nickname for Jackson. But I think both John and Jack are fine names by themselves. It wouldn't be like Bobby because that is a rather uncommon
nickname for the name Robert. (Rob or Robbie would be much more expected). John and Jack are so commonly used that they are now their own names as well as nicknames.
With that said, I would never chose it because it's just not our style. It's way too 'common', 'plain', 'traditional' however you chose to describe it. If that's your thing, go for it.