Because the GOP doesn't know how to appeal to us and personally, I think they are "afraid", to go and preach the good word of self responsibility and small government to us; why I don't know, but it's not like we bite or anything. They also don't know how to utilize people like RG3 and $cam Newton, both famous black athletes that happen to be Republican and can reach the youngins and inner city youth. I've been told by people that they would support the party based on its economic views, but they get turned off when they hear comments that seem like coded and aimed at disparaging black people ala "blahh people" from SelCrus' man crush, Rick Santorum.
Give credit to Michael Steele though; he was a bumbling fool that liked S&M clubs, but he laid the ground work necessary for the party to appeal to minorities.
Part of the thing is every time we try to, see Paul Ryan, we get disparaged as being racist and insensitive and such and its discouraging and why should we outreach to communities that until very recently hardly voted in strength in elections. Needless to say I am glad to see the GOP doing more outreach like that.