My life is easy. https://www.drupal.org/docs/develop/standards/coding-standar... "Use an indent of 2 spaces, with no tabs." Anyone writing custom code with a different coding style than the ecosystem they rely is a fool so that's decided for me.

If my dreams come true I will work with Elixir next. https://github.com/christopheradams/elixir_style_guide#space... "Use two spaces per indentation level. No hard tabs." See, this is why I like Elixir, I do not need to change my spacing habits from Drupal! :D