You haven't met my wife.
I've got her using the spreadsheet method for holidays. Before that, our mornings were:
6AM - me dressed and out the door for a walk
7AM - me back, wife sitting on the bed in her underwear:
"What's the weather like out? Is it too hot?"
"Well, it's supposed to be hot."
"Yeah, but hot, or hot-hot? Like really hot?"
"I don't know, it's all the same after 70F."
"Well, what're we doing today? The museum in the morning, and afternoon tea at that hotel...so that's inside, but it's hot and we'll be walking...so I need something that's light, but not too light, because there might air conditioning...what about this...or this...or that?"
<pulls out three tops, by now, it's 7:30AM>
"That one."
"Well, I can't wear that one! It's light-colored, and I'm wearing a dark bra!"
"Ok, don't know why you offered it as a choice, then, but that one instead."
"Well, I do like that one, but it rides up a little when I sit down, and if there are metal chairs anywhere, that's going to be a problem."
<and on and on and on, until it's 9AM>
"Ok, so that's the top, now...pants!"
Contrast that with the TastyReuben Clothing Decider Spreadsheet:
7AM - me back, wife sitting on the bed in her underwear:
"What's the weather like out? Is it too hot?"
"Who cares? Spreadsheet says you're wearing tan jeans, green top, and your boots. Let's go, time to eat!"
<downstairs for breakfast by 7:30AM>