A friend of mine had a 16' Burm years ago. They are common. People power feed them to get them to grow faster so they can be "Cool".
The problems with that is most people dont have the room to keep a snake of that size, dont understand how much it cost to heat and feed a snake of that size, dont know how to react when it ends up biting them, dont think about how dangerous they are to young kids because they dont have any when the get the snake and those are the ones I can think of real fast.
I feel if you are going to take another living animal into your house that you should be aware of all the possible problems because in my mind you should be responsible for it as long as it lives.
Most animals in know live 8-20 years. Big commitment.