ye its pretty crazy her <| sep |> Edit moved my opinion to the beginning of my commentI don ' t agree with the commenter completely writing off OP ' s wife ' s reproductive ability and safety , but her age is a significant factor in conception and carrying to term . I can see why OP ' s wife would be very worried about decreasing fecundity and how this may have driven her desire to talk about it now . Do you have a source for your 94 %? I ' ve been reading up on the topic recently and it seems as if you ' re using the figure for infertility between 1544 6 % as indicative of everybody who canwill conceive unaided . There ' s a significant variation within this range , particularly past the early 30 s . For example from Wikipedia the 1 year 4 year unaided conception rate for 30 year olds is 75 % 91 % whereas for 35 year olds it ' s 66 % 84 %. A Hungarian study estimated that 1322 % of 35 year olds were infertile . There ' s also a common conflation between ability to conceive with ability to carry a child to term . It ' s correct that the CDC have found a 6 % infertility rate , but their impaired fecundity rate ability to carry a child to term is considerably higher at at least 14 % for 35 year olds and is probably closer to 30 %. I currently can ' t access the primary research papers , but I believe nulliparous women are more likely to have impaired fecundity however this doesn ' t mean that not giving birth decreases your fertility although there ' s an element of truth in this it could be that women with impaired fecundity are more likely to be nulliparous because they can ' t conceive .