If you run 2560x1440 at its native resolution you can fit (4) side by side code windows at 80 characters with a very readable font size. Having 120 character lines only lets you have 2 (3 will cut off the last one by a decent amount).
Being able to comfortably open 4 files side by side is like having access to a completely new world compared to 2. You can often fit the entire context of what you're working on in one visible space.
I use 80 characters for mainly this reason and it's also no extra time spent when using languages like Python because Black will auto-format it for you, it comes down to running 1 command and letting the machine do all of the work.
If you run 2560x1440 at its native resolution you can fit (4) side by side code windows at 80 characters with a very readable font size. Having 120 character lines only lets you have 2 (3 will cut off the last one by a decent amount).
Being able to comfortably open 4 files side by side is like having access to a completely new world compared to 2. You can often fit the entire context of what you're working on in one visible space.
I use 80 characters for mainly this reason and it's also no extra time spent when using languages like Python because Black will auto-format it for you, it comes down to running 1 command and letting the machine do all of the work.