There's human factors reasons for e.g. web sites optimised for reading not using the full width of a modern screen though (including ones where the unused side space is not, in fact, filled with gunk but left empty with the text down the centre e.g. 40% of the screen even so), and it goes for code as well - the hardware might have changed but the liveware hasn't.
132 is fairly reasonable but I can still skim-read 80 column code noticeably faster (especially when I'm looking at a side-by-side diff).
You're welcome to have different preferences, of course, but I came to using 80 columns from having previously written much wider code myself - and the width of the -screen- I was using had nothing to do with my choice to switch.
