Took me half a dozen shaves to fully get past thoughts of accidentally slitting my own throat with a DE. No fucking way do I have the stones for one of those.
I felt the exact same way the first time I tried shaving with a straight, but in the end, it wasn't that bad. I don't have enough skills to use one on a daily basis because it takes me a long, long time to do it without cutting myself, but I am getting a little faster, and as with anything, it just takes practice..
If you're feeling extra brave sometime and have a few minutes, just take a plan DE razor blade and try to mimic the shaving motion of a straight razor on your face. (Don't try this on your neck - I found the best place is right near your sideburns where there is bone right near your skin - it makes it a lot easier) When your face is prepped correctly, it is actually quite hard to cut yourself...