> you are reducing the subset of possible skills available to improve society.

This happened long ago. Politics is exhausting (constant campaigning), poorly paid (unless you can leverage your position to sell bestselling books and speaking engagements later), and you have to check your logic and common sense at the chamber door. You have to have unlimited optimism to not become overwhelmed with cynicism and demotivated by despair from the sausage making process. Overall, politics is a shitty job mainly practiced by hucksters, psychopaths, and well-meaning but naive people who turn into a huckster or psychopath.