Julia, as an FTM I prefer to pass as male but I feel good when I notice that I really can't pass as a female without some serious efford (unless I actually wear male clothing).
Kendra, if that's you in your profile picture it's no wonder why you can't always pass as a male. You look very feminine and soft. Your HRT might be more visible than you think.
And yes, me being a hairy dude in a dress isn't hurting anybody. It's just ridiculous that the more masculine clothes I wear the less I pass as a man. In womens' clothes the slight moustache, receding hairline and the body hair suddenly becomes more apparent to people. It's like magic. If I wear mens clothes people just seem to notice the small hands and feet, petite body size and my face.
When I went out in a dress there was one young guy who thought I was a girl. He was very drunk and started bashing me. He thought I was ugly. He was very confused when I started laughing and never stopped. I just asked him to tell me more about my ugliness and laughed my ass of. I still laugh when I think about it. Then his friends game to get him (whispering wildly to his ear. I know why. I never bothered to make my voice more feminine) and I never saw them again. God. In my past I used to be quite fine looking and I hated attention. Now I am ok to to be bashed for looking like a gorilla in a dress. Life is funny. And I never thought I would love body hair, muscle and balding this much. And I do hate that kind if guys. No matter what you think about a lady she still is a lady and deserves respect. I was not a lady but he thought I was so he and people like him are trash.