The average human's genes are not that great as to deserve preserving. I certainly see the benefit from preserving the genes of the woman who lived 122 years old, though.

I don't think it's bad to find sex repulsing. I mean, sex is inherently disgusting. It involves naked bodies and bodily fluids. You can'g describe sex in a way that doesn't sound repulsing.

Besides, people can have children without having sex through IVF. But if a woman is repulsed by sex, I can totally see why she would also be repulsed by pregnancy.