I have a big family - while my sister and I are child-less at the moment, I have plentyyyyy of cousins that share my [maiden] last name. I took her last name because I didn't have a stance on it one way or the other, so the fact that it would make her happy if I did do it - why not? I also feel that it would blend/unify our families, and I wanted our future child[ren] to have it as well. While they would be linked biologically to me, they would also be connected to her not because she will be there to raise them, but because the name will be passed on to.
If someone disagrees with my logic, that's perfectly okay, because it is what it is and my family is awesome
