For me I love the 30-06. Its tied up in history, family the sort of thing that makes for family tradition in this case.
That does not mean I think the 308 is a lesser cartridge, 30-06 is where my heart is.
I can fully appreciate someone else having their heart with the 308.
I don't think there is any need to diss either one or if someone prefers one over the other there is something wrong with them.
None of us are a set of precision measurements, we aren't computers, we have our preferences, like and even dislikes.
I think we can all respect the others take on it.
Technically the 308 is superior, but to reach that (or show it) you have to be one heck of a marksman. Most of us never will or can't.
For most of us we would never know one way or the other and it doesn't matter.
its not like the 06 is a poor cartridge in any measure, its a fantastic cartridge that is slightly less capable to some degree than a 308, but we are talking the difference between a 4.0 student vs a 3.999 (my opinion the technical difference might be a shade more.