I can never tell what an index-juggling loop is doing, in whatever language (including Scheme).
But when you follow the data type case by case, each step is simple and logical, easy to comprehend so the whole solution is easy too.
I get that other people don’t have this preference, but I strongly do. Test results indicate I should be incredibly well suited to mathematical work but I feel the way I imagine a dyslexic must when I try to read math or “mathy” programming languages. Give me something more-or-less procedural and I’m totally happy (though I gather I had a much easier time understanding and getting comfortable with recursion than many people do, which seems weird given I find the languages most heavily associated with it almost unreadable).