But those are the parts I care least about :/ I don't care if Chell had beans on toast for breakfast, I don't care if she like playing chess outdoors on a sunny afternoon. I don't care if every panel in the game has its own unique serial number. I don't care if the lab is exactly 1 mile up a south-facing slope.
How much attention to detail do I care about? Not much! As long as there is GLaDOS and testing chambers, what else matters exactly? Sure we can have a story that moves things along, but how much detail do you need or even want in a puzzle game about portals?
Why are games now judged almost exclusively on story and attention to detail?
Because Portal, the game, is about the story more than the puzzles. Portal, the platform for modders and map makers, is about the puzzles more than the story (though Portal Pro didn't do too badly in that respect). If all you care for is puzzles then perhaps you were kidding yourself by getting the damn game on release when it was never going to be anything but heavily story based?