The other side of the coin is, bean bag and other "less than lethal" specialty ammunition may fail ENTIRELY to stop or dissuade someone.
That's why less than lethal munitions are used by police ONLY where they think it's safe to do so, AND where the user is backed up by lethal weapons if the less lethal round fails, which they DO in a fairly high percentage of times.
This is why you wouldn't want to try to use this in a home defense situation.
Another factor is, any situation where you're legally and morally OK in shooting someone, it doesn't matter legally whether you use a bean bag, or a load of buckshot.
If you're not legally OK with shooting someone with buckshot, you're NOT OK in using a less lethal round either.
As far as the law is concerned these days, there's no such thing as shooting someone "just a little", and it doesn't matter if you used a load of buck or a bean bag, you still SHOT someone.
As for a moral case of "giving the Bad Guy a break", he won't be giving you any.
Second, NEVER figure on getting multiple shots.
Consider what happens if the ONLY shot you get is a less then lethal round.......and it FAILS to stop him.