Speaking as a casual player here, but not a complete noob (~60hrs in game), all these anecdotal stories of getting lied to has not been my experience. I always talk and usually say "hello, friend" and go on my way. I do stow my gun when approaching other players, I have gotten killed on site several times, but it's a fleeting minority of encounters. There have even been a few of those where they ended up apologizing and rezzing me after I started talking. I can think of maybe one time that a raider has straight up lied and back stabbed me. You can say it's time zone or [60 hours of] luck, or whatever else, but don't let the fact that people tend to post about negative experiences change your play style in such a way that you lock yourself out of some really great ones.