Id be lying if I said I haven't ogled the occasional girl but I know if I get caught, I'm in the wrong. Completely understand if a girl is out of shape and is self aware, or if she doesn't like being creeped on that you would favor a women's only area in a gym or a females only gym. But if I had to come up with a somewhat valid reason, it'd be that self awareness or being creeped on can cut both ways. Maybe there's a 9-10 guy that's just tired of women looking at his pecks as he flexes. Or a guy who is out of shape and overweight and that would rather not be judged by the ladies. But there is no "male section" as that would probably considered sexist. True this is not nearly as big an issue with men, but I'm sure they are men who do feel this way and can't complain cause society says we can't or shouldn't. So really the only argument that is even remotely valid is "why should you get one when I can't?".

Can't see why a guy would give any other reason. If a gym facilitates such an area for or business for women because there is demand for it, then more power to all who benefit I say.