i feel like i'm pretty trustworthy and i feel like i can trust people in my family too. as for others who i'll meet or people i'm just beginning to know, until there's an actual discussion on it (on how serious i can be with them) or if something has occurred where i have some type of understanding of their ability to be trustworthy, then there's no point in assuming that they're trustworthy. but, even if they haven't proven it, i give most people the benefit of the doubt until something happens to make me think otherwise. and that doesn't mean that something monumental has to occur between me and them that makes me not trust them. it could be something as simple as them not meeting up with me like they said, or them not calling me like we discussed. usually this is over a period of time though, not first offenders. but after they've done enough little things, it helps me figure out if i should take them seriously or not. but, just in my everyday life, i find that most people aren't worth taking seriously because everyone's got a "me first" attitude.
and, aside from the attitude, it's also because no one communicates properly anymore...