For me there aren't any cons. The daily effort is extremely minimal; feed and water twice a day, clean out their enclosure as needed. Rabbit droppings make an absolutely fantastic fertilizer that requires no cooling off like chicken or pig does. Rabbits almost seem like they evolved to be livestock. They are easy and cheap to care for (especially if you have a decent garden), they are silent, minimal odour, ridiculously easy to dispatch if you have the right set up. They are the easiest animal I've ever encountered to skin. The only thing I'd classify as a downside is that if you butcher they at the optimum age for meat development/quality their hides are virtually useless, so I usually grow them for an extra couple of months so I can tan the hides without worrying about them falling apart. The downside to that is cost for feeding them as their weight per $ invested slows down and the meat isn't as tender.
So for a small investment of space, time and money a breeding trio will give you 75-100 rabbits a year. All clean, super lean, high in protein hormone free meat.