I've always seen the idea of manliness to be more of a joke that's best used to create characters such as Saxton Hale or as an abstract reason for why Sean Conory was the best James Bond. It's rare that I hear the term 'manly' without it being part of some tongue in cheek comment. To be 'manly' nowadays, I find, means to be an over the top stereotype of the male gender. Same thing would apply to being 'womanly' except that falls under the trope of Stepford Wives, and that actually can get a bit creepy.