I wasnt saying that is the only reason for tubs it is a big one, though I dont think someone with 20 or 30 snakes will have 20 or 30 cages that just isnt very efficient. unless you have a huge room its much easier to keep a bp in a tub versus a tank and if you plan on adding more to your collection you can put it in a rack. As for the appearence, well it isnt about that I was just saying compared to a tank it definetly is not a show piece.