Okay, yeah, cool, "I find your lack of faith disturbing" and all that, but dude. Ani. My guy. These guys don't know the Jedi ways. Of course they have no faith in it.
I mean, the most of The Force they've seen is you strangling a guy, which you could do with your hands, or a rope, if you weren't a drama queen. You're the force-user, the trained-to-be-Jedi on the ship. If you want them to have faith in you, you gotta explain The Force and the Jedi ways, and their power, because they have no way to educate themselves on it.
How about instead of killing people, you make a powerpoint and sit them down and tell them why they should have faith.