Why would someone want to buy incense?

Answer 1

Well, some people may like incense, and incense can be calming depending on the smell and how your feeling. Also, some are used for religious purposes

But normally its because people like the smell or it makes them feel calm.

Answer 2

someone would want to buy incense because they believe gods or other religious, and maybe because of the smells. A lot of people like to burn incense in their home to make it smell good.