Yeah I'm personally not a fan of the remake trend unless it's a substantial feature add or a major spruce-up to an old game. Even then, I don't think they are replacements to the originals. Especially since in my ideal scenario we're looking at new engines and thus different game behaviors no matter how close they try to stick to the source material.
One thing that we'd get with better game preservation is a higher bar for remakes. I feel the excitement that people feel towards remakes today tends towards "wow, I get to (re)play this non-current-gen game!", when imo it should be "wow, they've really improved on this readily available game!"
Adoption always comes with a certain level of trauma that not all people are prepared to help the child work through. There are also a lot of unknowns that come with it that can be challenging, both medically and behaviorally, that are lessened by having a biological child.
Naturally, it's also much more straightforward to have your own kid if there aren't fertility issues.