I think you're expecting too much of people. I don't trust anyone but my parents to put me before their financial self interest. I don't even trust my siblings

I think you're expecting too much of people. I don't trust anyone but my parents to put me before their financial self interest. I don't even trust my siblings to do the same, and we aren't on bad terms, either. The only reason they wouldn't "betray" you is if they saw more long term value in being in your good graces. It's not that they hate you. It's that they love themselves more than they care about you. A close family friend is a notary dealing in family estates. From what I can tell about human nature, whenever there is money involved, people fight. Fighting between siblings over inheritance is basically the norm, something to be expected. Same goes for business partnerships where two friends decide they will own a restaurant together. And if they manage to not end up fighting, their families will when one of them dies. Something else to keep in mind.