To all the people claiming that the child wouldn't be brought up under normal circumstances - firstly, the term "normal" is only when we compare to the typical nuclear family, something which gay adoptive parents is very dissimilar to. Secondly, we should be striving to try and change the "norm" if we're to try and encourage and welcome other sexualities (or races, classes, etc.) and make society more accepting.
However, it's a difficult issue, as childhood bullies are (probably unintentionally) incredibly judgmental and sometimes single out the different kids. So I'm sitting on the fence on this debate