Great for dating files, too. We have an otherwise exceptionally inefficient routing chain at work, but we're required to start each file with the date it was created (e.g. 20250101 Johnson Commendation) and it works beautifully for finding files and knowing how long they've sat in someone's "bucket" even though a hard copy is being delivered office-to-office (but final memo needs to be signed digitally). sigh
for storing/filing I agree but for normal use d-m-y makes more sense to me. it frontloads the most relevant information and you can cut it at either break and it could still be helpful, since one's likely to remember the month they're in and even more likely to remember the year. more significant is less relevant.
h:m:a makes more sense for the opposite reason. less significant units of time become less relevant at that scale.
in any case, ascending or descending is demonstrably better than whatever the fuck m-d-y is.
Theoretically, sure, but in reading and speech it doesn't really matter if you're comfortable with the format. If someone is going to say or write the full date you're not going to interrupt them after they say the day or reflexively stop reading after two numbers. If they just want to say the day, that's all they'll say.
M-d-y is whats sounds the most natural when spoken in a casual setting. I feel like thats the only reason it got carried over to text. I definitely use m-d-y when talking, and as an american I also use it out of habit when writing, but I will agree that y-m-d is definitely best for text.
As always, it's more conversational FOR YOU. You got used to it so it feels natural to you, I have two formats I'm used to just because I speak two different languages and they are perfectly conversational.
Most Germanic languages say "32" as "two-and-thirty".
Thankfully they did not hire Americans to figure out how to write Arab numerals, else we might have more conventions on how to write "86" than there are languages in Europe.