They are hard to take care of (as @PartTimeZombie noted) and very easy to kill. They need a lot of light and a lot of moisture; their natural habitat is swampy and low-nutrient areas. They evolved to eat insects precisely to compensate nutrient-bare soil they inhabit in the wild, but too much nutrients can kill them just as easily as not enough. They also require special care to survive through colder winter months. That being said, if properly cared for they can live for decades.
One really easy way to kill them is to play with their trigger hairs causing them to shut (which they can only do a finite amount of times), or to feed them things you’re not supposed to – like meat, or I dunno, fucking jelly beans. You really don’t need to “feed” them unless they are unhealthy.
It’s important to note that Venus flytraps are an endangered species. They are native to only a small area of the Carolinas and they have been in decline for several years now – in part because of over-collection, habitat destruction, and a lot of illegal poaching.
Sorry to be “that guy”, but this is really not a “wonderful thing”.
