mmm, when I was about 16 (duh), I finally figured out that everyone just lies and lies and lies, so I thought ok, I'll have a go, if that's the usual thing, but people just burst out laughing at my 'lie', it was so obvious. I had a few more tries but it was always the same, so I thought that since I'm so hopeless at lying, I'm stuck with being truthful. I like to think all sorts of spiritual merit goes with that, but maybe that's just wishful thinking. If I could lie like NTs, I would.
One of the things you have to realise is that although it may seem a 'bad' thing, people are just protecting themselves from the over-inquisitive, or those who would use any knowledge of them, to do harm, so...that's what makes us vulnerable too. Inability to present a false front makes you an easy target, because that false front is a shield.