As we have seen in recent elections, replacing politicians with non-politicians has been a disaster for the country. Why is a scientist running better than a science-aware politician running?
I think I'd be fine with a politician with a non science background if they had excelled in Math/Science based courses in highschool and were generally curious as to how our world works. The problem is that most politicians I've met have a strong legal background (good), but a non existent technical background. How can you make key decisions if you don't understand these topics? You just take the word of advisors? If two advisors tell you two different things, how do you know which to trust?