Plus the fact that a decent editor will handle the parentheses for you. When programming in Lisp, I use Emacs with paredit (for inserting and manipulating pare

Plus the fact that a decent editor will handle the parentheses for you. When programming in Lisp, I use Emacs with paredit (for inserting and manipulating parentheses, quotation marks, etc.) and have the default colour for parentheses be very similar to my background colour, so I can focus on the symbols and their indentation instead. The exception is when the cursor is next to an open/close parenthesis, in which case the matching parenthesis is highlighted.