I too think that many of us start back at the beginning, or rather where we began with a fresh perspective on all things learned up to that point.
I like what Ronin said about all martial arts being able to offer you something. I think this is a true statement. Everyone always has a list of this and that, did this and did that, this is good and this sucks, but even though what works and what doesn't is pretty basic, what works for some and not for others is not so much.
All things considered, I took from and learned something from every martial art style I trained in. In the end, Kung Fu was what I went back to because it provided what I needed, and still does.
"The hero and the coward both feel the same thing, but the hero projects his fear onto his opponent while the coward runs. 'Fear'. It's the same thing, but it's what you do with it that matters". -Cus D'Amato