If a game offers it for more than one character then its not a all or nothing prospect for me. I think it just depends on the character. I really like to immerse myself in the story and get into it. And If the person is someone who I think would be a terrible mother, or not someone I think the MC would be able to be good co parents with then no. Otherwise hell yeah!
I think the best example is Love and Sex: Second Base. Samantha? Sure. Kylie, hellll no.
Yes, but it pains me how much it's treated as a simple change of CG instead of a proper mechanic. I know most games that involve it aren't fetish games though, so can't really blame the devs for focusing on other mechanics that will increase appeal with the larger audience instead of going all in on something that only a small community enjoy.