And if all of that doesn't apply to libertarians I think there are some obvious sympathetic bonds there that end up attracting similar personality types, at least - secularism, a belief that individual freedom and dignity is the goal of a social order, concern with abstract economic questions (often leading to contempt for mainstream economics), et cetera. You could probably look at various demographic slices and find that libertarians and socialists tend to covary: among people who have ever played Dungeons & Dragons, probably higher than average, among people who have ever invented their own language, probably almost everybody.
On the other hand, some things will probably be forever foreign to me. I can map and even find internally consistent almost any ideology, with the right exposition, but even after that the notion that we ought obey God, or that the sexes have distinct roles in society, or that one race is superior to another strikes me as inherently absurd - and this despite the fact that all sorts of racist, sexist, &c. hobgoblins prance about in my subconscious all the time.