Do you mean the "primary focus" of your life is on "protecting marriage and banning abortion"? Does your belief that the government can, and should, "protect marriage" take precedence over concepts like freedom? Would you agree to any form of government as long as it banned abortion and gay marriage?
These are serious questions. I get the impression from some posters that they would willingly accept a government that would be anathema to conservatives if that government agreed with them on certain social/religious issues. It's not that this is not a legitimate point of view, it's that I don't believe that it is conservative, social or otherwise. I know several liberals who are anti-abortion and anti-gay marriage. They're fine people. They're still liberals.
No, I don’t want to see a big buauracratic federal government created and most social conservatives are strong constitutional conservatives as well. At the moment, I am fed up enough with our pluralistic culture which is destroying our counting so I personally would probably support more drastic laws regulating speech and entertainment than many republicans and especially Libertarians would. However, at the end of the day I really would prefer a small government I just want to see life and morality protected as well.
But at least with that kind of liberal you have a bridge to build upon (there are an aweful lot of that kind in the south)..!?