I am flexible about how wide my editor is. Pretty much all code I read bounds itself to some sort of limit around 80-120 characters. If there are a few individual lines that exceed the current editor width, I can scroll. I don't have to work with any codebases that have ridiculously long lines.
To be honest, I don't often read such code, or I try to run it through a formatter prior to reading. I guess I should have said that I _generally_ don't have soft wraps enabled. Sometimes I just have to plug my nose and soft-wrap.