I'm part of that "in-between generation" (I was born at the end of '62), and I've got no problem with jeans all the time; but there are some places that I wouldn't dare wear 'em -- church is among those. Then again, I think it's tied to how you were raised.
Yes, the missing "link" is how you were raised - unless you are a complete rebel - but then that is because how you were rasied too! HA!