I will fly...a bit anxious on take off & landing, but I will do it. However...
I will not set foot on a cruise ship because of a fear that is probably as big as yours about flying. So I can understand. No matter how many times my husband tells me that the Titanic was the last cruise ship to sink, I can not get over the fear of drowning. (had a near-drowning experience as a young child) I will swim, but only if I can stay near shore or have my life vest on & can see shore easy enough to get to it, even if I have to dog paddle to get there.