For example, in the ESTP description at personalitypage.com, it says, "An ESTP will occasionally have strong intuitions which are often way off-base, but sometimes very lucid and positive. The ESTP does not trust their instincts, and is suspicious of other people's intuition as well."
Again, I don't get this at all.
My hunches? Are spot-on. In fact, NOT listening to my hunches has gotten me into some seriously bad trouble. I learned the hard way to listen to my instincts. They know better than I do. Even if they make absolutely no sense to me in the moment, trusting them and watching events unfold proves to me how right they are.
My closer friends have learned to listen to me when I warn them of how events will unfold in regards to human behavior. When I give something my full attention and give one of my "forecasts," I guess you could call it, it's incredibly uncommon that I'm wrong. It's very frustrating when I say, "this is going to happen," but the person doesn't like what I have to say, so they ignore my advice and I can only sit by and watch the bad crap unfold I had warned them about. I absolutely hate saying I-Told-You-So, but I hate it more when people come crying to me all, "omg life sucks cuz this and that happened!" and I'm like, "You should listen to me next time, retard."
Mkay, enough bitching about that.
So, yeah. My Ni? It's very well developed, and I fucking love it. It's no shrivelled up little prune as it's suggested by being my 4th function. Maybe this has something to do with the fact that I was raised by an ISTP, so it's possible that I got a head-start on the whole Ni thing from learning by example.