Why keep a vice president around, who was appointed by someone worthy of impeachment?

[CapnAwesome]

The main argument I hear against impeaching someone like Trump, or Bush, or whatever, is that then we have whatever dipshit this guy picked as a vice president. Why? Why not the other major candidate of the rival party? Pence could be worse than Trump, mainly because he won't feel the need to go on a tweet storm, or have propaganda documents delivered to him every day to make himself feel better. But why keep him around at all? Why wouldn't he be promptly impeached as well?

They can impeach the vice president too, ya know. That would mean Paul Ryan becomes president. Despite most Atheistforums people predicting a massive Republican collapse every 35 seconds, it's Republicans the whole way down.