Speaking for myself, I consider myself a (small-l) libertarian. I consider myself an economic conservative. I do not consider myself a social liberal -- it's more like I care much more about the economic side.
Case in point: If I was in the legislature, and I could vote to drastically curtail welfare, I would do so even if a likely side-effect was an increase in abortions among the underclass.
If you were in that position (voting on a bill that would greatly curtail welfare, and greatly reduce the number of future underclass, at the cost of a short-term increase in abortion), and your only choices were for, against, or abstain, how would you vote?
I have accurately describe libertarianism and you all along, you agree with conservatives on economics, and support the left on social issues.
That is why when a group of seemingly conservative people are talking, and one of the strangers corrects you and tells you that he is a libertarian, you know exactly what he is saying.
The left/libertarians will succeed in abortion and the homosexual agenda, homosexulizing the military and getting polygamy and open borders and drug pushers and pimps advertising, long before those broken Americans, communities, and families, and the endless floods of countless immigrants start voting like Evangelicals and other conservatives.