Pick and choose your own canon, so you can ignore stories you think are character-assassinating and pick your favorite versions.
No picking on couples you'd never like anyway.
Here are some of mine
Like the couple, but don't want them to have kids
Diana and Steve - I like them as a couple, but I like the idea that parenthood isn't something either of them wants their life to be about. They have their missions (working both alone and together sometimes), and raising children just isn't what they want to do.
Raven and Gar - Sort of old school, when that Gar was growing up and becoming more mature (and his jokes were a cover for insecurities) was a given. I like the idea of them, anyway. But I also like the idea that the difficulties of Raven's early life, and the fear of her bloodline (and her father attacking through it, because he just doesn't stay dead) are something she'd never want for a child. And since the idea of motherhood isn't important to her, getting her tubes tied is a choice she makes young. Gar is fine with a lack of kids, too.
Bruce and Selina - I want her to have her daughter Helena (still not happy about adoption), and him to have his kids, and them to end up happily ever after. But not have more kids.
Like the couple, on the fence about kids
Ralph and Sue Dibny - I adore them in their silver-age splendor, before later stories added in angst, then made her disdain him. And, of course, Identity Crisis never happened in my world. But I also adore them traveling around and solving mysteries. And I'm not sure if a child fits into that life-style or not.
Katar and Shayera Hold - Space cops version. Not really sure when long-lifespan established, but as long as they are on earth, I feel like that would place their child out of step with peers (friends keep outgrowing the little mite, if they age more slowly in childhood, too). Nothing about them says they'd want to be parents to me. But nothing says they wouldn't either. I haven't read every story, of course.
On the fence for the couple, on the fence for kids
Hal and Carol - I've been on the fence about these two for a long time, though I haven't read much beyond the silver age because I like steady home bases/supporting characters and don't care for space-based adventures. They have a history, both negative and positive. I can't decide between them finally getting it right and a happily ever after, them in an eternal, unhealthy back-and-forth, and a final, sad break. I actually prefer a world where Katma isn't killed, so that's one little barrier out of the way (and I'm unsure to what degree Star Sapphire was possession at the time, anyway). I could be okay with them never working out. It feels unfair to keep more of their toxic interactions than I am with the couples I really like (almost ever ship has them), though. Then at what age do they get it sorted? If not for a nicely done panel on baby Martin, I wouldn't really consider these two having kids. Especially since there was a period earlier when Carol did not seem to want them (visiting with Hal's nieces and nephews as I recall).
On the fence for the couple, no for kids
Ray Palmer and Jean Loring - My temptation is to leave these two divorced and done with each other. Though Identity Crisis was a terrible character assassination. The only two things that make me reconsider are the more recent "tell Jean I love and the alimony check is in the mail" (sorry if I got words wrong) and that the affair seemed to come out of nowhere, with no foreshadowing (but I have only read a few issues of Justice League of America in the era, so may have missed foreshadowing). I haven't read a lot with them, but could be okay with some sort of reconciliation with Identity Crisis erased. But they both seem very career-oriented in what I did read, and didn't necessarily make time for each other (that's me extrapolating a lot from like one or two events, to be fair), so if they did reconcile, no kids for them.