Your ignoring opposes your lead. When you engage in it, it "feels" similar to your lead (it actually is your lead but with opposite orientation) but without the psychological satisfaction. Because there's no psychological satisfaction, you must force or stress yourself to "externally" obtain that satisfaction.
This is purely my own theory on the matter. We're good at the ignoring function, so we use it. But while using the lead gives internal satisfaction, overusing ignoring means seeking out that same satisfaction through some form of validation (or proof that it's actually valuable)