I hate not getting second chances, because I usually screw up my first chance. Doesn't everyone? I mean, that's life and learning, right? The problem is that second chances usually go to second candidates, which really means that there are no second chances, only someone else's first chance. That stinks, but it seems to be how people do "trust" these days. You get one chance to prove yourself when you meet someone, but then as soon as you make a mistake, the trust is gone and will never come back. Fool me once, shame on you, but you will never get a chance to fool me twice.
Mokalus of Borg
PS - Where "fool me" can mean as little as "interact with me".
PPS - But maybe it's only this extreme on TV and in movies.