To kill an animal are the biggest problem to most owners. If you know you won't be able to feed your snake with living food, perhaps you should think about buying a lizard or a turtle instead. Those animals mostly eats vegetables or pieces of meat. The terrarium and the animal must be checked everyday. When you have checked those things you are ready to buy your pet.
Snakes are very popular, and they are fascinating animals.
Depending on what snake you buy, you will have a fast, slow, thin or thick pet. I do not recomend you to buy venomous snakes. Not as a start. They could be dangerous and are not very easy to handle. It's only the experienced snakeowner that should concider such snake.