haha that's a good idea!
if more people took the chance of having a single betta and caring for it how they should they would become addicts like us! lol. i think people are just so worried about not being able to have more than 1 betta fish in a tank. in all reality i think it makes them super awesome and really beautiful.
but ya know, i try my best to give out the right information on bettas at work. all i can do is tell the customers how they should be taken care of and let them decide. it's pretty half and half of who actually listens and who could care less.