Most of the time the water is too cold for them and because of this they get sluggish and dont move.
I strongly disagree. The only reason they are "sluggish" is due to the size of the bowl/tank. Obviously the more room, the more area they will cover - but that goes for any living thing. Fact is, and I'll say it again, as long as it is properly fed, and weekly 100% water changes are routine, the fish will be perfectly fine in a one gallon bowl.
I think a lot of people here forget that they wouldn't have their beloved pet bettas if it weren't for the 1g tank. Seriously folks, think about it, if everyone used 5g tanks for bettas, then guess how many bettas would be culled off (killed, not just sold off) because of lack of space during spawn growouts? Breeders use 1g jars (some even use quart size jars) because they can expand and produce NICE quality stock. If you're so against small containers, stop buying veiltails, halfmoons, crowntails and the fancy plakats. By you purchasing them, you're putting a demand on good stock, which means that breeders have to use smaller containers or be overrun and overwhelmed.
I think a lot of people here forget that they wouldn't have their beloved pet bettas if it weren't for the 1g tank. Seriously folks, think about it, if everyone used 5g tanks for bettas, then guess how many bettas would be culled off (killed, not just sold off) because of lack of space during spawn growouts? Breeders use 1g jars (some even use quart size jars) because they can expand and produce NICE quality stock. If you're so against small containers, stop buying veiltails, halfmoons, crowntails and the fancy plakats. By you purchasing them, you're putting a demand on good stock, which means that breeders have to use smaller containers or be overrun and overwhelmed.
Breeders keep their fish in those containers temporarily. Bettas grow out in those containers, and then get shipped to their forever homes. It's similar to keeping dogs at an animal shelter. They only live in tiny cages for a little bit until they get adopted
part I disagree with is that the culling wouldn't happen with decreased demand.