<p>R' Micha Berger wrote: </p>
<div>> Charging interest isn't really wrong ("inherently immoral"), and thus </div>
<div>> not a middos issue. However, brothers should have an achdus haleiv, </div>
<div>> and ribis causes pirud. </div>
<p>I seem to remember a passage in Ezehu Neshech where someone has a Hava Amina that they might be allowed to charge their son interest because the difficulty it would cause would be a useful lesson. I think that at the time of the Gemara, ribis was regarded as something that could cause people immense problems. If that is true then I would have thought that charging interst is indeed a 'middos issue'.
</p>
<p>Alan</p>