Why is there so much poorly indented code out there?
coding-style, indentation, readability
Solution
Most cases of this problem that appear in the source base I work on most of the time are because of intermixed tabs & spaces. In one person's editor, with tab stops set every 4 characters, it looks fine, but on another person's system with 2 or 8 space tabs it looks awful. You can rearrange those numbers however you want; some files are messed up regardless. Changing the spacing is a giant pain for merging down the road, so it just never gets fixed.
Problem
The more I browse the code to open source projects in languages that aren't Python, the more I realize that it seems a lot of programmers don't believe in proper indentation. (I won't mention any projects specifically to avoid having anyone take this question too personally.) Usually code is indented, but in a way just different enough from the standard style that it drives me crazy, especially in old/crufty code. I've noticed that when I write in C-like languages, I tend to indent correctly as religiously as when I'm writing in Python, with the exception of debugging code that I actually want to stick out like a sore thumb. Given how easy it is with a modern IDE to fix incorrect indentation, what are some rationales for not religiously keeping indentation in sync with braces?