I just want to comment that I think it's interesting that straight people who can make babies by sex can still become parents if they have a 0% measure on this axis (and I currently know someone who's probably pretty low on this), while adoption-type agencies would really prefer to have people somewhere 80% or more, presumably.

[I am, luckily, childfree by choice. But if I weren't, well, yeah.]


[Oh, and it's also interesting to think of how this set of expectations has changed over the past 100 years. I wonder how "is ready to be a parent" would have have been defined in 1908; whether it extended much beyond, "is married".