Nanos are the new thing, I think people who rent etc need to have a small tank. If you have ever noticed majority of the people with big tanks live at home with there parents because it wold be near impossible to move !! (or they are the older generation that own their own house) , in saying that I would not like to stock a 10 foot tank. There goes 50 grand easy!! (stocking it chock full of nice corals and gear)