You just live in a far different world than me man if you don't think our role as a leader in the world is important. A RESPECTED leader. Say what you want about Obama, but for the most part he is respected globally. So was Bush. So is any damn President with a bit of diplomatic principles. Do I like either side, not really. But yeah, I'd rather have Hillary, hell I'd rather have Cruz or Rubio or Paul, than Trump. You want to "shake up" the system vote for Sanders. If you don't think partnerships are important in the world you're crazy.
You're right, it's not an emo issue. But it saddens me that people are willing to make an example of things by voting for a circus side-show at the expense of our credibility as a nation.