I worry about it being selfish too. I have a beautiful baby boy, Kai, who is 11 months old now and we have also decided only to have two if that is possible. So I would really like to try for a girl too. I too would be happy with a boy also as I love my son SOO MUCH!! but if I am going to try for another pregnancy, why not try and conceive a girl? At least then I won't wonder if I had tried would it have worked? If I don't try, and I just have a go for any gender, I don't want to then be trying for number three becuase I really did want to try for that girl after all!!
I'm not sure why I would love a 'pigeon pair' as they call it, I think maybe because my little brother and I are two years apart in age and get on so well.
I am mapping my temp/mucous now for a few months to pinpoint my ovulation time.
Good luck with your effort, keep us posted and I hope you get your girl!
Elle, DS: Kai 20/11/04 & DS: Jamie 13/02/07