Herein lies the tension of a writer or editor. When is it too much? and when is it not enough? That, by the way, is a classic example of the question mark mid-sentence.
Too much reads like hitting speed bumps. I've been guilty of "too much" many times, even been called a (get this) "comma lover." Yes, I confess: I love commas, and, in the past, had a whirlwind romance with semi colons.
A comma, around every corner, is too much (as this shows) and may detract from the meaning of the sentence.
A comma around every corner is too much. See how much smoother that is?
It's hard to resist those curvaceous little marks ...
But not enough is just as bad, or worse.
He came he saw he conquered. That has an absurd quality about it. Most readers would quit right there.
Better: He came, he saw, he conquered.
When all is said and done, editing for punctuation is part intuition and part skill, in varying degrees. Reading out loud helps. Knowing the rules helps. And, knowing when to break the rules is important, too.