I agree with you.
Whoever is born, is born. Should be happy with it regardless.
Like those people in China who have late abortions because they will be giving birth to a girl and not a boy. That's just sick.

However personally I would prefer a son first for the reason you stated although I have friends who say it's better to have a daughter first but I guess it's all personal choice. But I would definately not be sad if I had a daughter first.