Is it really you who are disappointed, or are you affected by society's expectations of what a little girl is? Because enforcing those expectations on a child is a horrible thing to do, yet a lot of us do it without thinking. Your daughter can be more of a sports lover than any son you would ever have. These things have nothing to do with what we have between our legs, it has to do with 1) our personalities and 2) our upbringing/socialization, what we are encouraged to do as we grow up. I don't think men are more interested in sports than women, I just think they are encouraged more to play sports and adults just assume they are more interested and thus put them more in contact with it. There are thousands of great female athletes in all fields.

So, yes, in my honest opinion you should feel a bit bad for being disappointed, but instead of making yourself feel bad about it, let it be an opportunity - an opportunity for growth, for bringing a beautiful person into the world who will live her life not forced into societal gender roles, but simply be herself because you let her and support her and don't treat her any differently than you would a son.

And, having a child the same sex as you can also be a good thing when it comes to more intimate issues - if she has questions about sex, menstruation etc. you will know what to answer, whereas a male parent would not to the same extent. That will also bring you closer in a way.