Yeah, I totally agree. I love long hair, too, but yeah, it's a bit stalkerish to be snapping pix of beautiful heads of hair out in public. If you get caught, get ready to go to jail. Ever hear of upskirt photo-snapping? This is just a step below that. Yeah, true, it's just like taking a picture of someone's arm, per se, meaning hair is out there for all to see as opposed to someone's panties. But still, it's a bit freakish. My girl knows I love long hair and I'm a lucky guy to have her (she has long brunette hair), and I would be pissed if I knew some guy was taking pics of her without her knowing it!
So, snap away if you dare. If you get caught, you were warned. Society is putting up with less and less these days.
In other words, keep your freaky fetish in private. Don't drag others (like women in public) into it. Sure, quietly admire them when you see them. But, take pics? Don't be perves.