What percentage of people you've met do you consider a genuinely good person? Someone you could trust your life with if need be?
Edit: I don't mean someone that will sacrifice their life for yours, more someone who would go out of their way to rush you to the hospital or something
I don't think it's wise to ever trust another person 100%. You should be aware that anyone could turn on you in the correct situation with the correct pressures.
and your heart could fail at any moment randomly. doesnt make it rational to design your whole life around it. Yes people can betray your trust, but again and again and again it's been shown that people dont betray eachother far far more often than they do. Also, if you're big on Logic™️, lying only works if the vast majority of communication is truthful.
I have a base amount of trust/distrust I assign to everyone. Some people go up in trust and some people go down, but nobody is completely trustworthy. Even my parents have lied to me and hurt me in the past. I love them and trust them more than most people but I still know they are absolutely capable of betraying me.