There are probably multiple reasons for this. They don't yet have an aro the is of size to require the massive tank. They don't yet have the funds that is requires to provide a massive tank. They don't have the room to provide a massive tank. There are those that know what size tank that they should provide for their aros to thrive, but are only willing to provide a small tank that the aro can survive in. The last may be because of their own personal reasons, yet it still doesn't mean they shouldn't pass on good advice on tank size.
Then there are also those who don't even have any experience in the matter and just regurgitate what ever info they've heard.
If everybody would just listen to me, the aro world would be a much happier place
((
grinno
))