I'm not an ENFP, but I'm going to answer anyway, because I find this subject most intriguing.
I have never in my life watched the news (or read newspapers, read them from the internet, listen to a radio, etc). No, I live in a complete void when it comes to news, politics and world situation and all such things. Neither do I vote.
I have ever met only one person who shares this quirk with me. He's one of my best friends, an ENTP. It's interesting to just read about other similar people here on the boards, because it seems so rare.
It's difficult to explain as to "why" I do it this way. Well, let's say this: 99,99% of news are completely irrelevant to me (and most of it to other people too, if they'd just realize it). The 0,01% of news that are actually meaningful and relevant are so important that even I hear about them through other people. So, I don't really miss the
really important news.
First, it's sensationalized, negative crap. Second, it isn't usually accurate. Third, I'm too busy. Fourth, I don't give a crap half the time.
That pretty much sums it up, too.
INFJs are the kind of people who think really big, tending to philosophize about mankind in general... And worry a lot. One might think INFJs watch the news most carefully, perhaps? At least I don't. I want to avoid it all. I'm very emotional and worrying, and I save my feelings and worrying towards my surroundings and close friends... they are actually relevant to me, as opposed to someone a thousand miles away I didn't even know of. I usually do care if I hear about a miserable fate somewhere, but that's the point, I don't want to hear about them...
This "news void" is perhaps the one thing in my personality that I used to get the most criticism for. For example, my mom is usually almost ashamed that I don't ever know what's going on. I find that "knowing what's going on" to be only a social ritual of sorts. However, I do think she is slowly realizing that I don't need the news like most other people. She doesn't nag to me about it anymore (not living at hers helps too, obviously).
I'd say news are a form of entertainment... to keep us busy and give us something to talk about. I'm not saying nobody sees how it's mostly irrelevant... most people probably do see it, but they just want the entertainment. And that's okay. We all have different sources of entertainment.