Well I do. Is that uncommon or something?
No, its not uncommon in a sense, while in another sense it is uncommon.
For example, there are many people who are "at war" with their conscience, like murderers, thiefs and so on. Because they have been taught right from wrong, if they grew up in a modern country most likely, yet they've changed that.
For example, if I steal something, then I probably feel very guilty, because I know that's wrong, because I've been told that's wrong.
But if I steal for 20 times, then probably that guilty voice of conscience will decrease, up to nothing. So every time when I'll steal something, the conscience will not accuse me or make me feel guilty, because I've trained my own conscience so. Actually, I will feel probably pretty good when I steal, because I taught my conscience that is not bad to steal(first step) and actually is good to steal, because I get to win some things, to sharpen my skills etc.(second step).
Thus, from believing that steal is wrong, my conscience had been taught trough my actions that steal is good, because I get some benefits, or I'm not weak (like other silly 'loosers' who think steal is wrong), or other reasons.
The conscience is just a value check mechanism. When a child is born, his conscience is a blank white canvas. The conscience is painted when the child is taught right and wrong, or morality. The respective taught values will 'paint' and develop the conscience of the child. So by its own, the conscience is not by any means something intrinsically good or something intrinsically bad.
A conscience only reacts to what a person believes is right or wrong. If I believe I eating to much sugar is wrong, then I would feel guilty when I would eat to much sugar. If I believe eating sugar is very good for my health, then I'll fell guilty when I don't follow that. The conscience reacts not only to moral rights or wrongs, but also to practical rights or wrongs.
I can't ignore my conscience. On some things it only pipes up after the fact as guilt, which a thing in itself, but when it's actually coming before hand I can't ignore it. The idea of even trying makes me physically nauseated. My guilt is pretty terrible in its own right but I can't even begin to mess with my active conscience.
I think even sociopaths can not ignore their conscience. Its just that they have a very different conscience, trained by themselfs to their own set of values.
But when I said that you maybe have a very powerful tendency to listen to your conscience, by that I wanted to say that some people have a very powerful developed conscience. I'll try to give a personal example to see what I mean.
When I was little, I was the only boy in our family, and I had two little sisters. I knew that I have to protect them. This was a very priority for my conscience. It was so strong and so powerful, that even the though that I could fail in protecting them would scare me to death, and make me feel very guilty. So by something that was just good intention(good), I would develop irrational fears of failure.(bad and unecessary). And I've observed that this is a INFJ thing in general.
That's why I think conscience can become a 'enemy' or something dangerous, if its not properly trained. In my experience, I just had to be learned that fear of failure brings nothing good, and therefore I should not encourage that.