I think acceptable breeding is:
*Genuinely breeding for the well being of the animal
*Promoting the best genetics, best health, best behavior
*Providing the best housing for all breeder pairs
*CARING about who you let your animals go to (ie: won't just sell to anyone who will hand you some green)
*Making the effort to inform your buyers about the care/health/characteristic of the animal you are selling
I think these are just few characteristics of what I think to be acceptable breeding practices. And this isn't just for sugar glider breeders. I'm talking about breeding any animal.
Anyone care to add/edit/criticize??