Does a knife make you feel "manly"?
Interesting question.
I get no more feeling of manliness than I do wearing pants. Since I've carried a knife since elementary school, it's become as part of daily wear as pants. Without one I feel naked or inappropriately attired. It's one of the reasons I don't like to fly anymore, and if I do, My knife goes into my pocket as soon as the luggage comes off the conveyor.