As someone who always backs in (unless it's a diagonal or pull-through spot) and a math person, I'm ashamed to say I never thought of the geometry of it, so thanks for the additional reason to add to my arsenal.
I can add it to "ready to leave quickly in an emergency," "practicing delayed gratification," "backup camera guidelines make centering easier," "constant trunk access," and the biggest real reason, "I have a bad habit of leaving for obligations at the last possible minute and need to plan ahead."
Brain not broke. Priorities changed, and it's okay.
As someone who has always loved reading, books just aren't something you can multitask. And before anyone says "stop multitasking; people don't actually multitask as well as they think they do," it really depends on what tasks you're pairing together. I can pair audiobooks with driving, dishes, laundry, etc. and feel like I've not hurt either task one bit while gaining time back, so that's how I consume most of my books.
I think there's still something to gain by sitting down and devoting yourself to actually reading a book, but I think it's okay to save that for the very rare book that's special to you for whatever reason and take your time doing so. And yes, LOTR is one of those for me too.