I have no problem with women only events. Folks should be able to have private events. Though I understand there is a cottage industry of tile crawlers with friendly plaintiffs who go to such events, get turned away and then sue under discrimination. Classy, that.
I know a lot of people love to dig at Planned Parenthood here, but they provide many economical services. STD screening, birth control, generally other reproductive related stuff. Different services are funded different ways because of laws, politics, etc.
I never donate to any politically sensitive organization in a traceable manner. Planned Parenthood does a good job. There's right wing ones that I'd also be hesitant to donating in a traceable non-deniable manner but would happily donate in an anonymous fashion. Obvious exception for 'sensitive' ones where if donating became a liability, Civil War Round 2 would be immediately necessary. EFF, NRA, ACLU, etc fall in that category.