You are missing everyone else's point, Frank. It does not take a molestation to put women off feeling "exposed" in their gym clothes and vigorous movements to male view. (SOME women, others are not bothered and the ones who welcomed you are an example. Some smaller, weaker men would not be bothered in my previous axample, because they are confident on their ability to get out of any "situation" which developed.
But if, for example, a woman comes from a culture where women most definitely do not put themselves into a position where men could take advantage of their relative weakness (and there have been terrible examples recently of what can happen in tho
She may be at risk from osteoporosis from lack of sunshine and weight-bearing exercise, she may have menfolk who will not let her go to a mixed class, she may have no money of her own and be unable to afford to pay for a private class.
Is it better that she is excluded from an essential facility, than that active and independent men cannot join it?
Think of someone else besides yourself, Frank Would you like your daughters to be discriminated against like that?