[cgmg]

> you rarely engage politically with the world

Why do you think arguing on social media is the only or even best way to engage politically with the world?

> So I'm left confused by your apparent inability to do the same.

Inability to do what?

[funkymike]

> Why do you think arguing on social media is the only or even best way to engage politically with the world?

If Facebook is one of the primary ways you interact with a set of people, then it is natural you would exchange political ideas with them on Facebook. Having to take any political (or other potentially controversial) discussion to a separate communication medium makes Facebook rather bland. It's requires a form of self censorship.