Bus or Plane?

We argued about it in our lesson. Some of us said "Of course bus, because it serves everywhere, mostly everytime.". Others said "But plane is safer than bus and it is more comfortable. It has a toilet!!" :) One of my friends said that if plane has an accident, we will certainly die. But if bus has, it can' t be happen. I don' t know. I think both of them have adventages but buses more easy reach than planes.