I am all for you loving Dan Quayle. If more people loved him, it could be profitable to commission a plush version of him. But he was in every way a lightweight, and Olebush personally and wisely dumped him.
Part of being a competent politician is avoiding getting typecast as an idiot or a philanderer, as the more recent examples of Rick Perry and Herman Cain demonstrated. If a leader is typecast as an idiot domestically, he can be sen in the same way internationally, and that can be disastrous.