I'm more interested in the individual fish as pets, so of course I like single specimens or mated pairs. I think people who like schoaling fish are more interested in the overall look of the tank, because a large schoal really does look impressive, but you can't really bond with them like you can a more interactive individual fish.
True, but you can study them; animal behaviour and that sort of thing; it doesn't have to be interior decorating. I haven't got room at the moment, but I could see myself with a large school of say giant danios and a little notebook, making notes on pecking order and sexual behaviour etc.