I had a whole post typed up but in reading the updated posts I don't think it is necessary to say the same thing others have said over and over. Joe G., EricH, and Steven Smith: I really appreciate your comments in advocating for me on the topic. It means a lot.
"Not wanting to hang out with a person isn't rude. Do you actually believe that? Other people should be able to tell me who I can and can't hang out with?"
In a professional setting, it isn't about having "fun". It was a lab lunch in which you sit around a table and eat while discussing your current advances in the project. I have been to them before. It's not chilling with your friends. It is like any professional work lunch with your co-workers in a work environment.
"I don't see the logic here. But it's a minor point."
Given that I'm working in the same department voluntarily as the rest of them are (we spend 10 hours a day during our summers researching), yes we do have pretty similar definitions of fun. Again, I'm not hanging out with my BFFs here - professional setting.
Also regarding the other posts you made about males are teachers:
http://www.menteach.org/
https://www.oct.ca/-/media/PDF/Attra...Teaching_e.pdf
If you see that there aren't initiatives to push women in labor oriented jobs - then start a campaign if you care about it that much.
About the "it comes down to biology":
Humans are savages by nature. It was embed in our biology to to do whatever we wanted in order to survive and reproduce, including kill. Why isn't it okay to murder if we are biologically wired to do so in times we feel threats on a consistent basis? We are biologically wired to reproduce. Meaning we will try to reproduce as much as they can - being promiscuous. Why is that socially looked down upon now, if we are biologically wired to do so?