Ah, long trips always bring about this moment. The moment after sitting between two chain smokers all day, the moment after driving through a dusty, littered countryside, the moment after the “evils of America” are told to me in hugely flawed detail by people who still send their children there for an education.
The moment I ask why I bother to do any of this. The moment I ask, “Why do I care when they don’t.”
I used to just go to bed and wake up in the morning and tell myself, “I care because it’s what I do.” We’ll see what I say tomorrow.
NotHemingway 
Keep the faith, bro. And have silent reassurance knowing that without you there, he’d be speaking Russian… or worse.
I had feelings similar to those you have. Hard to believe isn’t it since our professions are so divergent? Every day is a new day. That’s the only guarantee we get!