I was buying garden plants yesterday and saw these. What do people use these for? Are they practical to grow?

When you say raise a bed of them

My ghost get 6 foot tall and 4-6 feet wide I cut them back and had them saved except for the 18 degree weather was to much for them

So I got two more but I am still trying to figure out what to do with them

My wife (gosh what a wife). I came home one day and could not even breathe the kitchen air I dont know how she stood the smell for so long

She was trying to make ghost pepper jelly and
The ghost peppers particles were everywhere in the air and I started caoufhing for three or more hours

I seriously almost bought one, but chickened out. Bought a chiltipin plant so I can make some old school hot sauce - clear jar with them in vinegar and salt.

I am an avid grower of hot peppers. I love to try them, add some to chili etc, and give to friends. They also grow beautiful and gnarly pods which is fun. They can also be a little challenging to grow so that makes it more fun too.