What counts as "making the others present feel uncomfortable"? Do you mean actively saying anti-sex things, or just being too old?

I match the general LW meetup demographic in age, race, and religious beliefs, but not in gender, occupation, or hobbies. I recently started attending the Cambridge MA meetup, and I'll be interested to see how it goes. I'm a married woman with zero experience in math or hard science, who works with people rather than data, who plans to have kids, and who attends church for the community and comfort of it. No one at the meetup has yet indicated they can't accept these things (except the word "church", which elicited actual cries of dismay.)

I think it would be a loss to this community if we preemptively discourage people because they don't resemble the rest of the group in outward ways. A lot of people from other walks of life have never been exposed to the idea of polyamory, or transhumanism, or what have you. That doesn't mean they have no capacity to think about them.