I think it's more complicated than just sexual harassment.I don't know if this is directed at me, but in the interest of speaking directly:
I wish anti-discrimination policies were rigorously enforced, including against women's only gyms, which wouldn't be necessary if sexually harassing gym chodes were treated appropriately by said rigorous enforcement of anti-discrimination policy.
I understand and am sympathetic for the desire for women's only gyms, but the need for them is a pretty unambiguous sign of societal failure to enforce the reasonable norm that women should be able to exist in public without being sexually harassed.
Some of the women's gyms I've seen (including Curves) being female only provide a modesty benefit. They cater to people who are not super fit. An over-weight woman may feel more comfortable performing exercises and wearing the related outfits without men present, even if those men are not jerks and are not harassing her. In other words, it caters to a segment that's self-conscious.
Planet fitness tries to cater to the self-conscious demographic as well, but takes a different approach that targets both sexes. (Men can also be self-conscious when observed by women.)
Most gyms don't allow harassment, but there is no policy that can be put in place to address someone who is self-conscious about their body. Providing a comfortable space for people to exercise is a positive thing.
