In my lifetime (I think we're about the same age), we have had have administrations with Republican legislative majorities, yet taxation- aka creeping socialism- has increased, restrictions on personal freedoms have increased, lack of adherence to constitutional principles and law has increased, our politicians lack of accountibility to their constituency has increased; you name it, everything moves progressively more totalitarian. The only difference is the rate of it's movement.
But then, I tend to be cynical about these things...:)
It takes huge majorities to change the direction of the country. Republicans just don't have the numbers. Liberals control most of the media, K-12 education,higher education, every government bureaucracy and hundreds of NGOs.
Check out the majorities Democrats needed under FDR and LBJ to get their agenda enacted into law: Congressional History from 1789 to 2000.
In 1979, Democrats had more of a majority in the House than the GOP had seats. In 1994, Clinton's party had a 7 seat lead in the Senate and an 82 seat majority in the House. Even with that, liberals did not get everything they wanted.