We can try to prepare/prevent for any danger and leave the rest to god's. You have to have faith in the system you live in, like the elevator, electric, alarms, water, even a/c.<br />
If you are so concern with building fires, or electrical troubles, consider being on a level high enough that a fire truck ladder can reach. Being on the 10 fly would be as dangerous as the second floor, but a lease you can leave by stairs.
i would hate to be trapped in one while i have to take a wicked crap , that would be a drag and really hope i'm alone in the trapped elevator then but with my luck i would just have done it and the doors would then fling open and all the building staff would be there looking at me , ha ha