I got over my paranoia of falling by hanging out a window at 10 stories by my waist. Used to be scared to go near the window when I lived in that place. As for robbers, you just need a good deadbolt. I have one on my bedroom door... mostly to keep my pothead roommate from going near my room, but partially to at least give me some warning when people try and break in.
Dead bolts are nonsense unless you have a steel door frame. Been robbed three times in the past year and they kicked the door in once. If you have a wooden door frame the dead bolt will blast right through the frame with enough force.