These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Aesop Amnesia: A real-life version, and from the film's lead actress herself! In an interview shortly after the film's release, Jennifer Aniston stated that she does not feel that women need to settle with a man just to have a child. This would have been a fine statement on its own, but then she says “The point of the movie is what is it that defines family? It isn’t necessarily the traditional mother, father, two children...family is what is around you and who is in your immediate sphere. That is what I love about this movie. It is saying it is not the traditional sort of stereotype of what we have been taught as a society of what family is.” Actually, that traditional stereotype is almost exactly what this movie's point is. We are repeatedly shown just how badly Sebastian not just wants but needs a father, and that without two parents he has become socially maladjusted and melancholy. True, the movie might go too far by suggesting that Kassie and Wally marry just for Sebastian's sake, but then, that in and of itself shows that the movie's point was not that family is just "what is around you and who is in your immediate sphere." Especially since Wally spends a majority of Sebastian's life not in his immediate sphere and it's mostly by accident that he keeps circling back into it, but we're clearly supposed to want him to fulfill the badly-missing father role in Sebastian's life. Aniston's point may have been valid if it weren't for the fact that Wally is Sebastian's natural father and based almost solely on that is shown to be the better choice over Roland.