I am in full agreement that Pence would not be better than Trump, for same and other reasons.
I also fully agree there will be backlash if Trump is impeached... but there is a fairly large minority of this country (my guess at least 10%) that is fed up with the swamp and the normal politics of today... and this minority group wants change, and feels change is essential to saving the American way (whatever that means today???) Most of this group are ardent Trump supporters, even today, but also there is a percentage that are still Bernie supporters and ANTI ESTABLISHMENT supporters - and NOT Democrats or Republican backers - that are closely watching how the Establishment is treating the Outsider... Knowing that Bernie or any other Outsider would be getting the same treatment. Thus, if Trump gets forced out by the Establishment, this group will react, and by many accounts this group is already angry, aggressive and somewhat armed. It could get ugly quickly.
On North Korea... I am not sure if crazy / unpredictable behaivor should be handled with unpredictable / spoiled brat behaivor. I certainly hope there are some voices of reason somewhere in the world working behind the scenes here.