Complete aversion in my case. Both my girlfriend and I think children are an annoying burden and have never desired to ever have them. (Is there a trope for "childfree" on this wiki? There totally should be one.)

No there shouldn't.

Played almost entirely straight by a lesbian couple I used to work with, who i) did want children, ii) did use a (gay) male friend's sperm, and iii) claim to have used the turkey baster method because it was cheaper. No ZanyScheme or hijinks involved, however, nor much drama, and the process was successful.