I don't know where these mythical "good people" are, but they have been few and far between in my experience. People _will_ let you down, people _will_ disappoint you, even the so-called "good" ones, even family. I don't have the same opinion of AI as the OP, I've never used it for anything other than questions that needed answering or work related stuff, and I don't think I could ever use it for personal things, but I agree that people overwhelmingly suck.
Family being human and letting you down is different than being out to get you. Family can certainly suck. It's the one group you don't get to pick, but I think people are generally good but flawed.