I know a lot of people who just love going on cruises. But for several reasons, I've just never had the desire.
I don't know how to embed a powerpoint presentation, but take a look at these - great pictures: http://www.authorstream.com/Presentation/Nubiagroup-1304777-nubia-group-luxury-cruise-ship-costa-concordia-run-aground/. My sister sent me a shorter version of the powerpoint presentation in an e-mail and I found it rather riveting.
I know there are dangers in traveling anyhow, but since I never was drawn to the cruise experience, I'm certainly not now.