Is there any proof that these fish hate being in jars? How do we know what a better life for a Betta is?
I wonder if they actually venture out of their small territories that they set up for themselves in the wild, they certainly aren't designed for efficient swimming, even the plakats.
Personally I would never want to breed put aggression in fighters. I want mine to be as mean as possible. If a fighter doesnt flare then I cant see its true beauty, and in my opinion, having the highest quality fish around is useless if you don't even get to see him in his best form.
If it wasnt for jars we would never have the types and quality of Bettas we see today, infact we would be lucky if we even had vt.