Is cruising worth it? Best vacation value out there. Great way to find new locations that you may want to visit again. Do as much or as little as you want. Affinity programs that yield impressive benefits that don't require annual requalification. Meals from casual fast food to sit-down dining that is generally fairly good and included (the gourmet stuff costs extra). Someone else makes the bed and cleans the bathroom, and all sorts of helpful people should you need something. Free entertainment, the list could go on.
The real question is whether you will like cruising. I love to fly, but I like cruising even more. Of course, the ridiculously low prices help. Going on a five day Key West/Mexico cruise Saturday.....for $179 or about $35 a day, and it includes four hours a day of complimentary libations in addition to all of the above.