one of the things that is really refreshing about buffy is that she does not really want to be a mother.
angel insists that she can not be with a vampire bc sooner or later she would want to have "fat grandchildren" even though buffy says she doesn't care about that and she is not a good nurturer.
she never really embraces a maternal role to dawn. she tries her best to be responsible for her but clearly struggles and is miserable in the role that is not right for her.
i was worried that the show would "fix" that aspect of buffy's characterization but while buffy grows into a more responsible and resourceful adult, she still does not embody the parental persona that is often forced onto her.
also, i haven't read the comics yet but i know that there is a storyline where buffy mistakenly thinks she is pregnant and chooses to have abortion. and i like how in the comics, she embraces the role of auntie instead, lol.
anyways, this is yet another reason why i hope the sequel won't have her married to some random human man so that she can have children and be "normal".
just give us domestic spuffy raising cats together!