Excellent post. The problem with the labels is exactly what you say; people see what someone says on one issue, label it as either liberal or conservative, and think they know everything about the person. Liberals do this (say something they don’t like and you’re a nasty conservative), and conservatives do it (say something they don’t like and you’re a bleeding-heart liberal out to destroy society).
Just months ago, I defined myself as conservative, since I understand the word more like “prudence” than “status quo”. And I see prudence, introducing change [that which can be changed, not speaking about dogma] after thorough consideration, as opposed to “change for the sake of change”. On the other hand, for some conservatives, the motto seems to be “avoid change at all cost” - something with which I couldn’t disagree more.
Basically, I’ve come to realize that depending on the subject, I may be seen as everything from blazingly liberal to rigidly conservative. In real life, people are sometimes very surprised when the subject changes and they didn’t anticipate that I don’t fit their preconceptions. Which tells me the labels aren’t much good. If anything, perhaps “moderate” is a better label for people like me, but then again I’m anything but moderate in my view against abortion, and probably other subjects too. In the States, people would probably see me as far left when it comes to welfare and economic policy, while in my own country, I’m seen as right-wing on the same issues. So basically, while I think we need labels (labelling things seems to be a basic trait of how our brains work), using one label to describe a person’s entire worldview just doesn’t work.
Even “Catholic” isn’t good enough, if we return to religion and not politics; first, it’s not like the Church binds us on every single issue we encounter, there is a huge amount of doctrinally legitimate disagreement within the Church - not only about things that aren’t dogma, but about interpretation of dogma. So the label “Catholic” only labels me in that I am in communion with the Pope, adhere to the dogma of the Church, and do my best to “think with Her” in interpretation of dogma as well as other matters. It would probably also tell many people something about my world view in general, but there are really thousands of world views in the Church, often culturally based. For example, I find American Catholics to often see things in an entirely different light than I (and most Catholics I know in real life) do.
So there are no single labels that can describe a person’s entire set of opinions and beliefs. It’s tempting to categorize (I do it, even though I wish I didn’t), but it’s really something we’d be better off without.