Just because RINOs (moderates) have acquired increasing power in the party leadership since the 70's doesn't mean they don't exist. From your ignorant statement, I take it that you are not a strong conservative.
I am a strong Constitutionalist.
Republicans must run acommodating the electorate in the states which are to elect them. This means some will be more or less conservative in emphasis according to the electorate they are expected to represent. Giuliani would not get elected in Georgia nor Saxby Chambliss in NY. Both can be useful in national GOP politics.
You should not expect to approve of every Republican since they are not responsive to you but to those who elect them.