I'll play...
Most likely: something stress related, aneurysm maybe. And if I dont' stop smoking, there's always that.
Ironic: I've never left the contiguous 48 states, and everyone I know bugs me about it, so if I finally got a passport, left the country, and then died the second I set foot in a foreign land with someone running up and stabbing me (I hear muggers stab people in distant lands, none of this gun stuff). They'd be LAUGHIN' it up back home.
Wish: At some point when I've accomplished any modicum of the things I want to in life, and I happen upon a fire or some sort of hostage situation. I could run in, save a few lives and then get killed in the process, like a quasi-suicide that would make my life in the end mean something, but avoid all that being old and slowly dying stuff. Wow, that sounded way more depressing than it does in my head.
Afraid? the idea of death itself doesn't scare me, just not being able to live to accomplish enough of the things I want to do before it's over. If I can get some stuff done, then I'm pretty sure I'd be ok with it if I knew it was coming. Though, who knows, when faced with it I may become a blubbering and whiny fool who pees his pants/depends.