I’m an 80 cols person, and I admit to be low-key enraged by wide lines. I really like having lots of side-by-side editors and a terminal, and long lines bust that, and I resent what feels like a lack of sensitivity for others’ workflows in many modern tools that generate wide lines.

That said, I try and practice what I preach and let my coworkers who are into wide lines (120, woof) have ‘em. I just run a formatter after I check code out, ez. Everyone should do this, online diffs should default auto format to 80 cols (but configurable), and we should put this debate to rest.