Maintaining a cactus is a fairly easy job, and they are best suited for busy people. They make great as houseplants as they don't require much watering and make your home look beautiful.
Cactus are very popular and are grown both indoors and outdoors. In short, growing cacti is not that difficult, if you know the right methods. However, ideal growth conditions may not be the same for all species. So you must try to gain some knowledge about the particular species you want to grow.