Apparently it's more common than you might think. They obviously don't advertise it but because so many cruises are populated by old people death happens. My uncle was told by his doctor to go and he's got to carry an oxygen tank with him at all times, can't walk to the bathroom without it, yet apparently a cruise is good for him.
I like the ocean and I like fishing, I've fished out of plenty of small boats for big fish, but day trips are more than enough for me. I have no intention of getting on a boat I have to sleep on and can't get off until the captain decides to find a port.