Voluntary childFREEness

(choosing if you want to encompass the children of others)

or

Voluntary childLESSness

(Many suffered abuse by the hands of their own parents and as such have little interest in parenthood, or the duplication of their family's genes.)

https://en.wikipedia.org/wiki/Voluntary_childlessness

=============
More from page....
=============
Voluntary childlessness or childfreeness[1][2] describes the active choice not to have children.

The word childfree first appeared sometime before 1901[3] and entered common usage among feminists during the 1970s.[4][5]

The suffix -free refers to the freedom and personal choice of those to pick this lifestyle. The meaning of the term childfree extends to encompass the children of others (in addition to one's own children), and this distinguishes it further from the more usual term childless, which is traditionally used to express the idea of having no children, whether by choice or by circumstance