Even if this does end in political violence or civil war, if you vote, at least you will have tried to avoid that fate by participating in our democracy as much as possible. Voting is just so easy to do, how can you justify not doing it as anything but laziness? It can’t hurt and takes almost no effort.
It is not. You need to re-familiarize yourself with what monarchy actually is. Maybe spend a year in an actual monarchy/dictatorship country if you have so little appreciation for the democracy you currently enjoy?