I recently read the takes on the subprime lending financial crisis in Obama's memoir [0] and McCain's memoir [1], and I found they agreed on the facts completely, but had completely different political approaches to what needed to happen next.
Ignoring politics Twitter and cable news is also a big help.
I’d say you may be looking at US politics through some rose colored spectacles. Being involved in politics is relatively much less hazardous to one’s health than at virtually any previous time in the nation’s history.
The 1850s and 1860s were a battleground leading up to the literal battleground of the Civil War and the “quality of political debate” declined severely as the government became more and more polarized on the issue of slavery.
[0] https://en.m.wikipedia.org/wiki/Caning_of_Charles_Sumner