(The misnomer is that some modern people interpret "separation between church and state" as an abolishing of any religious activity within any government institution. That's not what it meant - but I think you understand the difference.)
This has nothing to do with me, I only disagreed when you said Ron Paul was not libertarian . Not only does he still seem libertarian, it wasn't that long ago he was the leader of the Libertarian Party. Still seems silly to say he's not libertarian. If you disagree so strongly, go get into a wikipedia war trying to remove that wording from his page. :)
If there are a lot of libertarians who are pro-life, then they are mislabeling themselves. That is one of the most clear cut issue on social rights.
Clear cut? Wow, if there was ever an issue wrought with moral dilemmas it's that one. Am I correct in guessing that you mean the position in favor of more social rights is the pro-abortion-legalization position?
Joining the Libertarian party just makes you a member of the party. You do not have to hold any certain positions to just be a member of any party. He did that because he is more conservative and less authoritarian than republicans. He is way more authoritarian than most libertarians are. He only joined the party because they are equally conservative.
You are now confusing abortion itself, with the libertarian stance. The libertarian stance on it is clear cut, even though the issue itself is not. Conflating seems to be a major problem for you.
There is also no such thing as "pro-abortion", that is a straw man. There is nobody going around like "yea lets kill some babies!!". That is the same reason I NEVER refer to pro-life as "anti-choice", because that is a bit of a straw man also. Of course pro-life is quite a euphemistic moniker. Pro-criminalization is probably more accurate.
Libertarians of all types are against creating black markets, period. No criminalization of abortion, guns, drugs, or anything else that would create a big black market. That is by definition. Libertarianism is all about personal liberties. Of course the Libertarian party is on the far right version of this. However this defines ALL libertarians, whether they be right, centrist, left, of socialist.
If someone is for any of that stuff, it puts them somewhere near the middle of the authoritarian-anarchy scale. This is by definition. I think what you don't understand is that being conservative does NOT make someone a libertarian.
Here is a good example test. It's not 100% accurate, but it will get you in the ball park of where you are. http://www.politicalcompass.org/
It measured me close to the lower left corner, left libertarian. I think I measured just a little more liberal than I actually am, but it's not too far off.