This may be a controversial opinion, but I believe anything but 80-column line length to be a bad choice for coding.
The majority of lines are not going to exceed 80 columns; but I have to pay for longer lines in screen real estate in my splits.
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I greatly prefer using an 100 column limit. I think 80 columns has a negative impact on readability since the limit is hit far too often. 100 is a nicer balance where it's hit far less often. A smaller limit also discourages using meaningful naming which helps readability a lot.
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I hate reading C code using a more traditional style with tons of 1 letter variable names and lots of meaningless overly terse names. I think the 80 column limit is a huge part of that because if you actually give things reasonable names, you'll start hitting the limit too much.
I have two 27" 3840x2160 monitors, each split down the middle to make 4 columns of windows. With the font and window border sizes that I prefer and line numbers enabled, there's room for ~168 columns, so screen real estate doesn't really factor into it for me, just readability.