[Danihan]

Or it's extremely soothing because you're never surprised by anyone's selfish intentions...

[enraged_camel]

I don't see how second-guessing everyone's motivations and looking for hidden motives in every single thing they say or do can be "soothing", but to each his own.

[icebraining]

It's the Scout's motto applied to interpersonal relationships. It can be soothing in the same way that keeping an emergency kit can be soothing.