>>597
Extremism allows for completely stupid shit like isolationism to sound like a great idea when it is coherent with the extremist ideology.
Centrism, when informed by history, facts, and reason, tempers all and endures all. When multiple left wing parties rule or exist overwhelming the right, centrism does not shift ideologically. Though to temper the storm we may push more right ideas, we remain balanced.
Centrism focuses on balance and survival. While the left and right focus on power and elimination of the opposing side which they never achieve, or do so only briefly before public sentiment shifts.