I still prefer yyyymmdd for day to day. If year is irrelevant just skip it. If you only use a date format you get used to it and it becomes the most efficient one due to consistency. Sidenote, in my language the default date format is actually yyyymmdd.
For sorting or filing, I agree. I think in day to day life, though, Day and month are way more significant. So I actually prefer DDMMYYYY for that.
I still prefer yyyymmdd for day to day. If year is irrelevant just skip it. If you only use a date format you get used to it and it becomes the most efficient one due to consistency. Sidenote, in my language the default date format is actually yyyymmdd.